Peach tree borer can damage ornamental cherries and plums.Photo from Peach Orchard News, Alabama Cooperative Extension
Boxelder BugPhoto from Whitney Cranshaw, Colorado State University, Bugwood.org
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Current commercial horticultural information from the Cooperative Extension Office in Kent County Delaware, an outreach arm of the College of Agriculture and Natural Resources at the University of Delaware.
Update on the Kent County Commercial Horticulture Blog
I started this blog several years ago to deliver timely information to horticultural producers and professionals in Kent County. I took great pride in updating the blog daily with the most current information. In 2010, I took a new position within the University of Delaware as the Extension Vegetable and Fruit Specialist for the University and will not be posting on this blog any more. The blog will remain up as a resource but no updates or new information will be added. For current recommendations contact your county extension office.
Gordon Johnson, Extension Vegetable and Fruit Specialist University of Delaware Carvel Research and Education Center 16483 County Seat Highway Georgetown, DE 19947 General Phone: (302) 856-7303 Direct Phone: (302) 856-2585 ext. 590 Cell Phone: (302) 545-2397 Fax: (302) 856-1845 Email: gcjohn@udel.edu
Gordon Johnson, Extension Vegetable and Fruit Specialist University of Delaware Carvel Research and Education Center 16483 County Seat Highway Georgetown, DE 19947 General Phone: (302) 856-7303 Direct Phone: (302) 856-2585 ext. 590 Cell Phone: (302) 545-2397 Fax: (302) 856-1845 Email: gcjohn@udel.edu
Useful Links
- UD Extension
- UD Horticulture
- UD Ornamentals Hotline Blog
- UDBG
- UD REC
- DNLA
- DDA
- DE Center for Horticulture
- DE Invasive Species
- MD Ornamental IPM
- Rutgers Plant & Pest Advisory
- NE Greenhouse Update
- MSU Greenhouse Energy
- MSU IPM
- Turfweeds VPI
- Turffiles NCState
- PA Turfgrass Management
- VA Horticulture Pest Guides
- Hort Business Blog - Dr. Hall
Blog Archive
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Contributors
Index
- ‘Wentworth’ Viburnum
- 24D
- 4-H
- Abelia
- Acclaim extra
- acclimation
- acclimatization
- Acelepyrn
- Acer maximowiczianum
- Acer nipponicum
- Acer rubrum
- acetamiprid
- acidification
- acidity
- adjuvants
- AEC
- Aesculus × carnea
- Aesculus parviflora
- Aesculus pavia
- Afghanistan Redbud
- agentina blue sage
- Aglaonema
- agrobacterium
- Ailanthus altissima
- air pollution
- algae control
- alkalinity
- all american trial garden
- allegheny monkey flower
- Allegheny Serviceberry
- allium
- Allium schubertii
- Alnus serrulata
- alternaria
- alternative energy
- alternative heating
- Alum Root
- ambrosia beetle
- Amelanchier × grandiflora
- Amelanchier canadensis
- Amelanchier laevis
- American Holly
- American hornbeam
- American plum
- American Yellowwood
- ammonium nitrate
- ammonium sulfate
- Amsonia hubrictii
- amur maple
- and quince are highly susceptible. Other plants
- anemone
- Anemone virginiana
- ANLA
- ANLA Management Clinic
- annosum root rot
- Annual Bluegrass
- annual cicada
- annual flowers
- annual grubs
- annual ryegrass
- annual vinca
- annuals
- anthracnose
- ants
- aphid control
- aphids
- apple scab
- Apple Serviceberry
- arboriculture
- arborists
- arborvitae
- arborvitae leafminer
- Arctostaphylos uva-ursi
- arizona cypress
- armellaria
- Armillaria Root Rot
- armored scales
- armyworms
- Aronia arbutifolia
- Aronia melanocarpa
- Arrowwood Viburnum
- artillery fungus
- Aschocyta
- Asclepias purpurescens
- ash
- ash rust
- asian bush honeysuckles
- Asian longhorned beetle
- asiatic garden beetle
- asiatic garden beetle grub
- Aster
- aster diseases
- Aster divaricatus
- Aster laevis
- Aster turbinellus
- aster yellows
- asters
- Athyrium ferns
- Atlantic White Cedar
- Aureobasidium microstictum
- austrian pines
- autumn daffodil
- Autumn Fern
- azadirachtin
- azalea
- azalea bark scale
- Azalea caterpillar
- azalea lace bug
- Bacillus thuringiensis
- back injury
- backyards
- Bacopa
- bacterial blight
- bacterial leaf scorch
- bacterial leaf spot
- bacterial shoot blight
- bacterial soft rot
- bagworms
- baldcypress
- baldcypress rust mite
- Bamboo
- banker plants
- Baptisia australis
- bark cracking
- bark splitting
- Basamid
- basil
- Bear Oak
- Bearberry
- bedding plants
- beetles
- Belamcanda chinensis
- beneficial insects
- beneficial nematodes
- bentgrass
- Berberis × gladwynensis. Barberry
- bermudagrass
- Betula lenta
- bidding
- Bigroot Geranium
- biodegradable pots
- biological controls
- biological insecticide
- biomass
- biostimulants
- Birch leafminer
- birds nest fungi
- bittercress
- black gum
- Black Hickory
- Black Knot
- black medic
- black pine
- black root rot
- black spot
- Black Tupelo
- black vine weevil
- blackberry lily
- Blackhaw Viburnum
- blanket flower
- bleeding cankers
- blister beetle
- blog feed
- Blue False Aster
- Blue False Indigo
- blue spruce
- blue stain fungus
- blue star
- Blue Vervain
- blue wood sedge
- Boehmeria platanifolia
- borders
- borers
- boron deficiency
- boston ivy
- botanic gardens
- Botryosphaeria
- botrytis
- Bottlebrush Buckeye
- boxelder bug
- boxwood
- boxwood leafminer
- boxwood psyllid
- boxwood spider mite
- bract burn
- bradford pear
- branch angles
- branch failure
- broad mites
- broadleaf herbicides
- Broadleaf Ironweed
- broadleaf weeds
- Bromeliads
- bronze birch borer
- Broussonetia papyrifera
- brown marmorated stink bug
- brown patch
- Bt
- buffalograss
- bulb crops
- bulbs
- bulletins
- Burkwood Viburnum
- burls
- burning bush
- business
- business management
- Buttercup Winterhazel
- butterfly bush
- Buttonbush
- Buxus microphylla
- cabbage aphid
- calcium deficiency
- Calibrachoa
- calibration
- Calico Scale
- California Incense Cedar
- Callicarpa dichotoma
- Calocedrus decurrens
- Canada thistle
- Canadian Yew
- canker diseases
- Carex flaccosperma
- Carex morrowii
- carfentrazone
- Carolina Jessamine
- Carolina Jessamine Vine
- Carolina Rose
- carpenter bees
- carpetweed
- Carpinus caroliniana
- Carya texana
- catalpa caterpillars
- Catawba Rhododendron
- caterpillars
- CEC
- cedar-apple rust
- cedar-quince rust
- Cedrus deodara ‘Well’s Golden’
- Celero
- census of agriculture
- Cephalanthus occidentalis
- Cephalotaxus harringtonia
- Cercis canadensis
- Cercis canadensis ‘Covey’
- Cercis canadensis ‘Hearts of Gold’
- Cercis chinensis
- Cercis griffithii
- Cercospora
- Chamaecyparis obtusa
- Chamaecyparis thyoides
- Chastetree
- Cheddar Pink
- Cheilanthes lanosa
- cherries
- Cherry trees
- Cherrybark Oak
- chewings fescue
- chickweed
- child labor
- chimera
- Chinese fringe-flower
- Chinese Fringetree
- Chinese Pearlbloom Tree
- Chinese Redbud
- Chionanthus retusus
- Chokeberry
- Christmas trees
- chrysanthemum
- chrysanthemum brown rust
- chrysanthemum white rust
- Chrysogonum virginianum
- cicada
- cicada killer
- circling roots
- citrus mealybug
- Cladrastis kentukea
- Claude E Phillips Herbarium
- clearwing borers
- Clematis ochroleuca
- Clethra alnifolia
- clothianidin
- clover mites
- cold injury
- cold weather
- coleus
- color trial
- common chickweed
- Common Persimmon. Cockspur Hawthorn
- Common Witchhazel
- compaction
- compost
- compost topdressing
- compost use
- compostable pots
- composting
- concentrated superphosphate
- coneflower
- conifers
- conserve insecticide
- construction
- container nursery
- container plants
- container reuse
- Contorted Hardy Orange
- conversion factors
- cool season grasses
- cool season mites
- cooley spruce gall adelgid
- core aeration
- corn speedwell
- Cornus
- Cornus alternifolia
- Cornus kousa
- Cornus racemosa
- Corylopsis pauciflora
- Corylopsis spicata
- Corylus americana
- Corylus avellana
- cost control
- Cotinus
- Cotinus coggygria Golden Spirit
- cotoneaster
- Cotoneaster adpressus
- cottony camellia scale
- cottony maple leaf scale
- cottony maple scale
- cottony scales
- cover crop
- crabapple
- crabapple scab
- crabgrass
- crabgrass germination
- crape myrtle
- Crataegus crus-galli
- creeping bentgrass
- creeping charlie
- Creeping Cotoneaster
- creeping red fescue
- crown gall
- Cryptomeria
- Cryptomeria japonica
- Cryptomeria Scale
- cultural problems
- current pests
- customer service
- customers
- cut flowers
- cutleaf coneflower
- cutting height
- cyclamen mites
- cypress species
- cytospora
- Daphne
- Daphne x transatlantica ‘Summer Ice’
- Davidia involucrata
- day length
- daylily leaf streak
- daylily rust
- deep planting
- deer damage
- deer flies
- deer management
- deicing
- Delaware Center for Horticulture
- Delaware State Fair
- Delaware State University
- demand
- Deodar Cedar
- dessication
- Deutzia gracilis
- diagnostics
- diammonium phosphate
- Dianthus gratianopolitanus
- Diascia
- dicamba
- dieback
- DIF
- dinotefuran
- Diospyros virginiana
- Diplodia
- diplodia tip blight
- Disarm
- disease
- disease control
- disinfectant
- disinfestant
- dismiss
- DNLA
- dog day cidada
- dog vomit slime mold
- Dogwood
- dogwood borer
- dogwood sawfly
- dogwoods
- dormant oil
- dormant pruning
- Douglas fir
- Dove Tree
- downy brome
- downy mildew
- Dr. Charlie Hall
- drainage
- drinking water
- Drive
- Drooping Leucothoe
- drought
- drought effects
- drought tolerance
- dry shade
- dry weather
- Dryopteris erythrosora
- Dryopteris marginalis
- e-verify
- earthworms
- easter lily
- Eastern Arborvitae
- Eastern Redbud
- Eastern Redcedar
- eastern tent caterpillar
- eastern white pine
- eastern wood fern
- Echinacea
- economics
- ed
- ed kee
- edema
- Edgeworthia chrysantha ‘Red Dragon’
- Edgeworthia papyrifera
- Elderberry
- elections
- electrical conductivity
- elongate hemlock scale
- emerald ash borer
- Emmenopterys henryi
- energy
- energy conservation
- English ivy
- Entomosporium leafspot
- entrepreneurship
- epinasty
- eriophyid mites
- Erwinia
- escalade
- estimating
- ethylene
- Euonymus
- Euonymus scales
- Eupatorium rugosum
- Euphorbia amygdaloides
- European corn borer
- european fruit lecanium scale
- European Hornbeam
- european hornets
- European pine sawfly
- european pine shoot moth
- evergreens
- exclusion
- exfoliating bark
- exobasidium galls
- extension tent
- factsheets
- fairy rings
- fall armyworm
- fall asters
- fall fertilization
- fall leaf color
- fall needle shed
- fall plant sale
- fall planting
- fall tree planting
- fall webworm
- false nettle
- farm tags
- fascination
- fern
- fern scale
- ferns
- fertilization
- fertilizer injectors
- fertilizer injury
- fertilizers
- fertilpot
- FFA
- field nursery
- field pansy
- field violet
- Filbert
- Fine fescue
- fire blight
- fire flies
- fireblight
- fires
- firewood
- Flagship
- Flameleaf Sumac
- flat reuse
- flatheaded appletree borer
- flatheaded borers
- fletcher scale
- flooding
- florel
- floriculture
- flower color
- flowering
- flowering cabbage
- flowering kale
- flowering perennials
- fluroxypyr
- foliar nematode
- fomes
- forage radish
- Forsythia
- Forsythia viridissima
- Fothergilla
- Fothergilla × intermedia
- four-lined plant bug
- Fragrant Sumac
- Franklinia alatamaha
- freeze damage
- frogeye leaf spot
- frost
- frost and freeze probabilities
- frost cracking
- frost heaving
- fungal diseases
- fungi and mulch
- fungicide resistance
- fungicides
- fungus gnats
- Fusarium
- fusiform rust
- Gaillardia
- galls
- ganoderma
- garden centers
- garden mums
- Gaura lindheimeri
- Gelsemium sempervirens
- genetic mutations
- genetic reversions
- Genista lydia
- Gentiana asclepiadea
- geotextiles
- geranium
- Geranium macrorrhizum
- gerber daisies
- gerbera
- Ginkgo
- Ginkgo biloba
- girdling roots
- Gladiolus
- gloomy scale
- glyphosate
- Golden Alexander
- Golden Hakone Grass
- golden rain tree
- Golden Spiderwort
- Goldenrod
- goosegrass
- gouty oak gall
- grade changes
- graft incompatibility
- grape hyacinth
- grasshoppers
- gray mold
- Green and Gold
- green june beetle
- green june beetle grub
- green products
- greenhouse
- greenhouse energy needs
- greenhouse heat loss
- greenhouse heaters
- greenhouse heating
- greenhouse insects
- greenhouse maintenance
- greenhouse media
- greenhouse media testing
- greenhouse pest management
- greenhouse sanitation
- greenhouse temperature
- Grey Dogwood
- ground ivy
- ground nesting bees
- groundcovers
- growing degree days
- growing media
- growth regulator
- grub control
- grubs
- guy wires
- gypsy moth
- hairy bittercress
- hairy lip fern
- Hakonechloa macra
- Hamamelis vernalis
- Hamamelis virginiana
- hand lens
- happy holidays
- hard fescue
- Hard Rush
- hardening off
- hardy banana
- harlequin bug
- Harry Lauder’s Walkingstick
- Hawthorn
- hawthorn lace bug
- hawthorn leaf spot
- Hawthorn leafminer
- Hazel alder
- heat
- heat cramps
- Heat dormancy
- heat exhaustion
- heat safety
- heat stress
- heat stroke
- heaters
- heating costs
- heating oil
- hedges
- height control
- helleborus
- hemlock woolly adelgid
- henbit
- Heptacodium miconioides
- herbaceous perennials
- herbicide activity
- herbicide injury
- herbicides
- Heuchera
- Hibiscus
- Hibiscus coccineus
- Hibiscus syriacus
- himalayan honeysuckle
- Hinoki Falsecypress
- hispanic workers
- holly
- holly leaf miner
- holly leafminer
- Holly osmanthus
- holly pit scale
- honey bee swarms
- honey bees
- honeydew
- honeylocust
- honeylocust leafhopper
- honeylocust plant bug
- honeylocust pod gall midge
- honeysuckle
- hormone
- horned oak gall
- horsechestnut
- Hort Management
- Hort Scape
- horticultural ecosystems
- horticultural oil
- horticultural pictures
- hosta
- humidity control
- hybrid bluegrass
- Hydrangea
- Hydrangea arborescens
- Hydrangea quercifolia
- Hydrangea umbellata
- hydrogels
- Hypericum kalmianum
- IBDU
- ice
- ice damage
- Ilex glabra
- Ilex opaca
- Ilex verticillata
- imidicloprid
- immature insects
- impatiens wallerana
- imported cabbage worm
- Indian Pink
- Indian Wax Scale
- indicator plants
- Indigofera pseudotinctoria 'Rose Carpet'
- indoxacarb
- Inkberry holly
- inonotus
- insect activity
- insect control
- insect development
- insect galls
- insect larvae
- insect pests
- insect predators
- insect stages
- insecticide resistance
- insecticides
- insects
- INSV
- Interiorscape
- International Society of Arboriculture
- invasive plants
- IPM
- Iris
- iris borer
- Iris prisimatica
- iron chelate
- iron deficiency
- iron toxicity
- irradiance
- irrigation
- irrigation water
- ISA
- ivyleaf speedwell
- Jack Pine
- jagged chickweed
- japanese beech fern
- Japanese beetle grub
- Japanese beetles
- japanese black pine
- Japanese Cedar
- Japanese Flowering Apricot
- japanese holly
- japanese honeysuckle
- Japanese Kerria
- Japanese maple
- japanese maple scale
- Japanese Plum Yew
- Japanese quince
- Japanese Sedge
- Japanese stiltgrass
- japanese tree lilac
- Judo
- Juncus inflexus
- juniper root rots
- juniper scale
- Juniper Web Worm
- juniper webworm
- junipers
- Juniperus virginiana
- kabatina tip blight
- Kalimeris incisa
- Katsura tree
- Kentucky bluegrass
- Kentucky coffeetree
- knock out roses
- knotweed
- Koelreuteria paniculata
- Kontos
- Korean White Pine
- Kousa dogwood
- labor
- lace bug
- lacebug
- lacewing
- Ladies’ Tresses
- lady beetle
- laetiporus
- lamium
- landscape
- landscape beds
- landscape design
- landscape evaluation
- landscape fabric
- Landscape horticulture and design major
- landscaping
- larvae
- late blight
- lawn
- lawn decline
- lawns
- leaf blotch
- leaf burn
- leaf color
- leaf diseases
- leaf disposal
- leaf drop
- leaf miner
- leaf mulching
- leaf retention
- leaf scorch
- leaf spots
- leafhopper
- leafminers
- leafy gall
- leatherleaf Mahonia
- lecanium scale
- leopard moth
- Leucosceptrum japonicum
- leucostoma
- Leucothoe fontanesiana
- Leycesteria formosa
- leyland cypress
- lichens
- light levels
- lighting
- lilac
- lily-of-the-valley
- limb failure
- lime
- liming
- Lindera benzoin
- Lindera melissifolia
- liquid feed
- liquid lime
- liriope
- liverworts
- Loebner Magnolia
- london plane trees
- Long-stalked phyllanthus
- longhorned beetle
- longtailed mealybug
- Loropetalum chinense
- low pH
- low temperature
- Lowbush Blueberry
- madeira mealybug
- Magnolia
- Magnolia ‘Judy Zuk’
- Magnolia × loebneri
- magnolia scale
- Magnolia sprengeri
- Magnolia virginiana
- Mahonia bealei
- manganese toxicity
- maple
- maple death
- maple wilt
- maples
- Marathon
- marcescence
- marestail
- marketing
- Marsh Blue Violet
- masked chafer grub
- maskell scale
- Mazus reptans
- Meadow Sage Verbena hastata
- meadows
- mealybugs
- media pH
- media testing
- meetings
- meister products
- Merit
- mesotrione
- methylene urea
- Mexican Bush Sage
- microbial pesticides
- Microbiota decussata
- Microstegium vimineum
- mile-a-minute weed
- millipedes
- mimosa webworm
- Mimulus ringens
- minute cypress scale
- minute pirate bug
- Miscanthus sinensis
- Mitchella repens
- mite control
- mites
- miticides
- mixed containers
- Mockorange
- mole control
- moles
- momentum
- mondo grass
- monoammonium phosphate
- Morus alba
- moss control
- mountain ash
- mouseear chickweed
- mowing
- mugo pine
- Mugwort
- Muhlenbergia capillaris
- mulches
- mulching
- multicolored asian lady beetle
- mums
- musa basjoo
- mushroom
- mustard
- mutation
- Mutinus
- Myrica pennsylvanica
- Nantucket pine tip moth
- natural enemies
- nectria canker
- needle casts
- needle drop
- needlecast
- neem
- nematodes
- neonicotinoid insecticides
- New Guinea Impatiens
- new jersey
- Nikko Maple
- nimblewill
- Ninebark
- Nippon Maple
- nitrogen deficiency
- nitrogen fertilizer
- nor'easter
- Northern bayberry
- norway maple
- nuisance fungi
- nursery
- nursery media
- nutrient management
- nutsedge
- Nyssa sylvatica
- oak
- oak galls
- oak lace bug
- oak leaf blister
- oak skeletonizer
- oakleaf hydrangea
- oaks
- obscure scale
- orangestriped oakworm
- orchardgrass
- organic controls
- Oriental Arborvitae
- oriental beetle
- oriental beetle grub
- oriental bittersweet
- ornamental cabbage and kale
- ornamental grasses
- ornamental onion
- ornamental pears
- ornamental peppers
- ornamentals
- ornamentals hotline
- ornamentals hotline website
- Osmanthus americanus
- osmocote
- outdoor growing
- overwatering
- overwintering
- oxalis
- Oxydendrum arboreum
- oystershell scale
- ozone
- Pachysandra
- Paeonia rockii
- pageant
- Pagoda Dogwood
- pansies
- pansy
- Paper Bush.
- Paper Mulberry
- paper pots
- paperbark maple
- Paperbush
- Parthenocissus tricuspidata
- Partridge Berry
- pavement ant
- Pea Bush
- peach tree borer
- pear
- pear blister mite
- pelargonic acid
- pelargonium
- penn-del arboriculture
- peony
- peony blotch
- peppers
- perennial grass weeds
- perennial ryegrass
- perennial weeds
- perennials
- peronospora
- Persea palustris
- persian speedwell
- pest management
- pest proofing
- pest walks
- pesticide effectiveness
- pesticide phytotoxicity
- pesticides
- pests
- Petunia
- PGMA
- pH
- pH meter
- phenological indicators
- Philadelphus
- Phomopsis
- phos-acid fungicides
- phosphorus fertilizer
- Photinia
- Photinia leaf spot
- photoperiod
- Phragmites
- Phyllanthus tenellus
- Phyllophaga spp. grubs
- phyllosticta leaf spot
- Physocarpus opulifolius
- phytophthora
- Phytophthora root rot
- phytotoxicity
- Pieris japonica
- pilotus
- pine
- pine bark adelgid
- pine needle scale
- pine sawfly
- Pine Tortoise Scale
- pine wilt
- pine wilt nematode
- pine wood nematode
- pink muhly grass
- pink snow mold
- Pinus banksiana
- Pinus echinata
- Pinus koraiensis
- Pinus rigida
- Pitch Pine
- plant a row for the hungry
- plant disease
- plant establishment
- plant failures
- plant growth
- plant growth regulators
- plant health
- plant phenological indicators
- plant selection
- plant stress
- plant temperature
- plantain
- planting
- planting depth
- plants for a liveable Delaware
- Plants of the Year
- plastic pots
- plastic waste
- Plectranthus
- Poa annua
- Poa trivialis
- poems
- poinsettia
- poinsettia bract edge burn
- poinsettia bract splitting
- poinsettia branching
- poinsettia disorders
- poinsettia leaf distortion
- poinsettia wilting
- poison ivy
- Poliothyrsis sinensis
- polymer/sulfur coated fertilizer
- polymers
- Poncirus trifoliata
- Pond Cypress
- porcelain-berry
- pot reuse
- potatoes
- pots
- potting media
- pour through method
- powdery mildew
- powerzone
- PPI
- prairie aster
- predator
- predatory mite
- preemergence herbicides
- pricing
- procerum root rot
- profitability
- propane
- provaunt insecticide
- prunicola scale
- pruning
- Prunus
- Prunus americana
- Prunus pensylvanica
- psyllid
- public service
- purple dead nettle
- purple deadnettle
- purple milkweed
- purslane speedwell
- puss caterpillar
- pyracantha
- pythium
- pythium blight
- Pythophthora root rot
- Quercus cerris
- Quercus falcata
- Quercus ilicifolia
- quicksilver
- quinclorac
- rain gardens
- rainfall
- recommended landscape plants
- records
- Red Buckeye
- Red Horsechestnut
- red maple
- red oak
- red pine
- red sorrel
- red thread
- red twigged dogwood
- redheaded flea beetle
- redheaded pine sawfly
- reduced risk insecticides
- renewable energy
- renovation
- Research
- retail sales
- Rhabdocline
- Rhizoctonia
- rhizomatous tall fescue
- rhizosphaera
- Rhizosphaera needlecast
- Rhizosphaeria needlecast
- Rhododendron
- Rhododendron catawbiense
- Rhododendron viscosum
- Rhus aromatica
- Rhus copallina
- Rhus typhina
- rice hull pots
- ringspot virus
- risk management
- river birch
- road safety
- root rots
- root systems
- Rosa carolina
- Rose
- rose midge
- rose mosaic virus
- rose pruning
- rose rosette disease
- rose sawflies
- roses
- roughstalk bluegrass
- roundheaded borers
- Roundup
- rove beetles
- RTF
- rudbeckia
- Rudbeckia laciniata
- Rudbeckia subtomentosa
- Russian Arborvitae
- rust
- rust mite
- rutgers
- saddleback caterpillar
- Safari
- safety
- saline soils
- salt injury
- salt spray
- salt tolerance
- Salvia
- Salvia guaranitica
- Salvia leucantha
- Salvia nemorosa
- Sambucus canadensis
- San Jose scale
- sanguinea
- sanitation
- saplings
- Saruma henryi
- scab
- Scaevola
- scale insects
- Scales
- scarlet rose mallow
- sclerotinia
- scoliid wasp
- scouting
- screens
- scythe
- secretary of agriculture
- sedges
- Sedum
- Sedum cauticola
- seeding
- seiridium canker
- Septoria
- Service Viburnum
- serviceberry
- Seven-son Flower
- Shadblow Serviceberry
- shade
- shade trees
- sheep fescue
- shepards purse
- shingle oak
- shore flies
- Shortleaf Pine
- Shrub Althea
- shrubs
- Slender Blue Iris
- slender deutzia
- slime flux
- slime mold
- slopes
- slow release fertilizer
- slow release nitrogen
- slugs
- Smoketree
- smooth aster
- Smooth Hydrangea
- snakeroot
- snow
- snow damage
- soft scales
- software
- soil compaction
- soil health
- soil pH
- soil sampling
- soil testing
- soils
- soldier beetles
- Solidago rugosa
- Solidago sphacelata
- soluble fertilizer
- soluble salts meter
- soluble salts test
- sourwood
- Southern blight
- southern red mite
- Southern Spicebush
- spanish language
- speedzone
- spent mushroom soil
- Sphaeropsis
- Spicebush
- spider mite
- Spigelia marilandica
- Spike Winterhazel
- Spiranthes cernua
- spirea
- spirotetranat
- spittle bug
- spittlebugs
- spot anthracnose
- spotlight
- spray drift
- spring
- spring flowering shrubs
- spring growth
- spring maintenance
- spring plant sale
- springtails
- spruce
- spruce spider mite
- spurge
- squirrels
- St. John's-Wort
- St. John’s-Wort
- staghorn sumac
- staking
- star-of-Bethlehem
- Sternbergia lutea
- stinging caterpillars
- stink bugs
- stinkhorn fungi
- stonecrop
- storm damage
- subterranean termites
- such as hawthorn
- sucker control
- Sucrashield
- sulfentrazone
- sulfur coated fertilizer
- sulfur coated urea
- sumagic
- summer oil
- summer patch
- sunscald
- superphosphate
- surfactants
- sustainability
- sustainable
- sustainable landscaping
- Swamp Azalea
- Swamp Redbay
- swamp white oak
- Sweet Bay Magnolia
- sweet birch
- sweet coneflower
- swimming pools
- swiss needle cast
- Sword Lily
- sycamore
- sycamore anthracnose
- Syringa × hyacinthiflora
- Syringae blight
- syrphid fly
- systemic insecticides
- systemic pesticides
- tall fescue
- tall thimbleweed
- tar spot
- tarnished plant bug
- Taxodium
- Taxodium ascendens
- Taxus canadensis
- temperature
- Tenacity
- tender perennials
- termites
- Texas Redbud
- Thanksgiving
- thatch
- Thelypteris decursive-pinnata
- thermoplastic resins
- Thermopsis chinensis
- thiamethoaxam
- Thielaviopsis Root Rot
- thrips
- Thuja occidentalis
- Thuja orientalis
- Thuja plicata
- ticks
- TMV
- Toad Lily
- Tobacco Mosaic Virus
- tomatoes
- topflor
- topping trees
- tortoise beetle
- tractors
- Tradescantia
- trainings
- translaminar insecticides
- trap crops
- tree back
- tree damage
- tree death
- tree decay
- Tree decline
- tree of heaven
- Tree peony
- tree planting
- tree protection zones
- tree pruning
- tree ratings
- tree removal
- tree staking
- tree topping
- tree transplanting
- tree wounds
- tree wrapping
- trees
- triclopyr
- Tricyrtis formosana
- triple superphosphate
- Tristar
- troubleshooting
- TSWV
- tulip tree scale
- tulip trees
- tuliptree
- Tuliptree Scale
- Turf
- turf decline
- turf fertilization
- turf growth
- turf herbicides
- turf insects
- turf renovation
- turf topdressing
- turf weeds
- turfgrass
- turfgrass varieties
- turgrass
- Turkey Oak
- twig drop
- twig girdlers
- twig pruners
- two spotted spider mite
- twobanded japanese weevil
- UDBG
- Upright Wild Ginger
- urea
- ureaform
- ureaformaldehyde
- Vaccinium angustifolium
- value
- variegation
- vegetable transplants
- velvet ant
- Venus Dogwood
- Verbena
- Vernal Witchhazel
- Vernonia glauca
- Verticillium
- verticillium wilt
- Vetch
- Viburnum dentatum
- Viburnum prunifolium
- Viburnum trilobum
- vinca
- vine weeds
- vines
- vining weeds
- Viola
- Viola cucullata
- Violet
- viruses
- Vitex negundo
- volatilization
- voles
- Volutella blight
- voting
- Vriesea
- walnut
- warm season grasses
- wasps
- water absorbing polymers
- water collection
- water consumption
- water edge
- water insects
- water movement
- water pH
- water quality
- water stress
- watering
- web blight
- website
- webworms
- weed control
- weed guides
- weed indicators
- weed seed bank
- weed seeds
- weeds
- Weeping Mulberry
- Weigela florida
- western conifer seed bug
- western flower thrips
- wet areas
- wetland plants
- wetwood disease
- White Beautyberry
- white clover
- White Cupflower
- white grubs
- white mold
- white peach scale
- white pine
- white pine blister rust
- white pine decline
- white pine weevil
- white prunicola scale
- white wood aster
- Whiteflies
- whitefly
- wild garlic
- wild mustard
- wild onion
- wild radish
- Wild Red Cherry
- wildlife management
- Willow Gentian
- wilting
- wind damage
- windbreaks
- winged ants
- Winged Euonymus Scale
- winter annual weeds
- winter damage
- winter dessication
- winter features
- winter injury
- winter interest
- winter protection
- Winterberry Holly
- wiregrass
- witches' broom
- Woadwaxen
- wood spurge
- woodlots
- woodsorrel
- woody landscape plants
- woody vines
- woolly aphids
- xanthomonas leaf spot
- yard waste
- yard waste ban
- yellow nutsedge
- yellow rocket
- yellow twigged dogwood
- yellowjackets
- yellownecked caterpillars
- yew root rot
- zinnia
- Zizia aurea
- zoysiagrass
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