Landscape Architects serving Central Illinois     Call Today 309-925-5277
Landscape Architects serving Central Illinois
Call Today 309-925-5277

Landscaping Tips
2018

We have put together some guidelines in caring for your plants broken down by the month, with a list of landscape pests as well.  Please contact us with any specific questions you may have.

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Watering Guidelines

Coming soon...

Maintenance Timeline

January and February

• Summer flowering shrubs can be pruned in winter, however spring flowering shrubs should be pruned right after they are done blooming.  General pruning rules: trim out dead branches, branches that rub, duplicating branches, branches that cross or will eventually rub.

• Begin planning and gathering ideas for your next landscape project.  Contact Stuber Land Design, Inc. for professional design and installation solutions

• Check pond heaters regularly

March

• Cut back roses, grasses, and perennials

• Grasses can be burned down if in an appropriate site

• Apply pre-emergent herbicides to landscape beds

• Fertilize roses with rose food plus systemic insecticide

• Prune panicle hydrangeas if not done in the fall

April

• Apply crabgrass preventer on lawn about the time Forsythia bloom

• Still time to apply pre-emergent herbicides to landscape beds

• Fertilize trees and shrubs with the appropriate fertilizer

• Treat aphids as they appear on Spirea and Roses

May

• Begin foliar sprays for diseases as leaves emerge using fungicides

• Prune back early blooming shrubs after they bloom

• Begin insect sprays on Boxwood (for Psyllids) when Weigela blooms

• Spray for scale when Catalpa trees bloom

• Begin spraying for Borers

• Start watching for rose sawflies.  First indications are silver spots and tiny holes in leaves

• Watch for sawfly worms on pines (especially on Mugho pines)

June 

• Prune evergreen and broadleaf shrubs (boxwood and yews)

• Scout and treat for early infestations of bagworms

• To detect spruce mites, shake branches over white paper, green/gray moving spots are an indicator that treatment is needed.  Red spots/streaks are predatory mites.  DO NOT SPRAY

• Apply rose food again

• Japanese beetle watch about mid-month

• New growth on Macrophylla hydrangeas should be out.  Prune off all dead branches.  

July

• Deadhead perennials for prolonged blooming

• Stella daylilies can be cut to the ground and allowed to regrow and bloom  

• Another application of pre-emergent herbicide is recommended on landscape beds

• Trailing annuals can be pruned back now for better blooming in late summer 

• Continue spraying for Japanese beetles       

August

• Watering, deadheading, and weed control

• Not a good time to prune Boxwood or Yews (new growth may not have time to harden off in the late fall)   

• Prune Oakleaf Hydrangea

• Make preparations for fall seedings

September

• Watch for second generation of Rose sawfly

• Lawn weed control (except in areas to be seeded)

• New lawn seeding and over seeding

• Aerate Lawns

 October

• Wrap young trees against deer damage early in the month

• Systemic drenches on trees and shrubs to help with Japanese beetle control for the next year

• Fertilize trees and shrubs

• Apply winterizer fertilizer on lawns

• Can begin cutting down perennials

• Plant fall bulbs such as tulips, daffodils, crocus, etc.    

 November

• Water evergreens and broadleaves if rains have been inadequate

• Prune deciduous shrubs except early bloomers

• Apply Wilt-Pruf to newly planted evergreens and broadleaves against dehydration

• Apply dormant oils to plants with scale infections

December    

• Any of the November chores that were not completed as weather allows

• Tree trimming 

Landscape Pests to Look
Out For

Rose Sawflies

• Tiny green worms on the undersides of the rose leaves that make holes in May and September

• If populations are high enough, can defoliate the rose bush

• Control with Sevin, Pyrethrins, Cyfluthrins as active ingredients or rose food w/systemic insecticide

Japanese Beetles

• Adults have a metallic green body with brown wings flying mid-June thru July

• Skeletonize leaves of Linden, Birch, Chokeberry, Apples, Peaches, Cherries, Roses, Burning Bush, and more. They change food sources about every 3 days

• Control with Cyfluthrins for 2-3 week residual control except when new leaves or flowers emerge. Sevin on fruit trees but does not last long.

Flea Beetles

• Tiny black beetles about 1/16" long that jump that make small holes in the leaves

• Feed on Lythrum and Panicle type Hydrangeas in June and August

• Control with Sevin or Cyfluthrin sprays as active ingredient

Bag Worms

• Feed on Arborvitae, Junipers, Firs, Spruce, Pines and some deciduous trees as well in Early July

• Control by picking off as many bags as possible

•  Begin spraying with Dipel, Spinosad, and Cyfluthrins in Late June thru July Aphids

• Can be green, yellow, red, or black bugs on the tips of new growth June thru August, makes leaves sticky

• Control with Pyrethrins or Cyfluthrins as the active ingredient

Spider Mites

• Pin head size or smaller insects on the underside of leaves in June thru August

• They make whitish or beige spots on the top side of the leaf making it look dull

• Dwarf Alberta Spruce, Burning bush, and really any plants with leaves can be affected

• Shake branches over white paper and watch for moving spots to detect mites

• Spruce mites in June, Red spotted mites in July and August

• Control only with Miticides or regular spraying of the underside of the leaf with water

Boxwood Psyllids

• Small 1/16" jumping, flying insects that make the leaves of boxwood curl and turn yellow

• Control in mid-May to early June with Spinosad, or Cyfluthrins as active ingredients

Boxwood Leaf Miner

• Yellow spotted leaves turn to brown spots

• Adult flies are about the size of a pin head and yellowish orange

• Control adults with Sevin, Pyrethroids, and imidacloprid as active ingredients when Weigela blooms in May and a 2nd application in July

Euonymus and Pachysandra Scale

• White spots on stems or underside of leaves is how they overwinter

• Control with insecticidal soap, Cyfluthrins in Mid- May spraying 3-4 times at 10 day intervals to kill all stages of the crawlers which are hard to see.

Pine Needle Scale

• White spots on needles

• Control crawlers with Cyfluthrins as active ingredient when the Vanhoutte spirea are blooming in mid- May and again when the Queen Annes Lace Blooms

Deer Rubbing

• Protect young trees up to 6" diameter from Bucks that can shred the bark on trees as they begin to mark their territory in early to mid- October.

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