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- Cautious garden banter
- Giving Thanks for Gardening
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- Holes in trees – wood borer or woodpecker?
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The Homeowners Column
Spring To Do List
Extension Educator, Horticulture
Listen carefully and you can hear the gentle hum of pruners and rakes in movement. A little warm weather ignites our spring cleaning genes and our passions to make this year different from the last garden season. This is the year we will finally trim the tree that kept hitting us in the face when we mowed last year or rejuvenate that ugly mess of a privet hedge. If your "honey do" list needs some entries, here are tips of what to do now in the landscape.
- Prune trees and summer flowering shrubs while still dormant. Many shrubs can be reduced in size by using renewal or heading back methods. Sterilize tools in between each cut with ten percent bleach when pruning diseased plants. Summer flowering shrubs bloom on new wood after mid June. Renewal pruning method is the removal of the oldest stems leaving the younger stems to develop.
- If needed, rejuvenate shrubs such as Anthony Waterer spirea, honeysuckle, redtwig dogwood and privet by cutting stems down to 4 to 6 inches.
- Transplant or plant trees and shrubs. Plants preferring spring transplant over fall include most oak, birch, baldcypress, dogwood and magnolia.
- Inspect trees with a past history of tent caterpillar. Look for dark brown or gray egg masses that encircle the twig. Destroy by pruning or scratching off with thumbnail.
- Apply dormant oil spray to euonymus to control the insect euonymus scale. Dormant oil sprays will also give partial control of pine needle scale. Temperatures should be above freezing for 24 hours after spraying.
- Some scale species such as oystershell scale are not controlled by dormant oil sprays. Get accurate identification of insect to determine control program.
- Clean up any plant debris that wasn't removed last fall. Gradually pull back mulch from plant crowns.
- Cut back ornamental grasses to 4-6 inches before growth starts. The cool season grasses such a Feather Reed Grass (Calamagrostis acutflora) green up quickly in spring so don't wait. The popular Miscanthus cultivars are warm season grasses so a little more time is available to prune them.
- Late March – early April gradually pull back mulch from roses.
- Be on the look out for rabbit damage on newly emerging perennials and spring bulbs. Fencing or inverted wire mesh baskets provide the only complete protection. Repellants may give some control.
- Wait until broadleaf weeds are actively growing before treating with postemergence herbicides.
- Get lawn mower ready. Sharpen blades, change oil and clean air filter.
- Wait until late April to early May for first fertilizer application.
- Rake up any twigs and debris.
- Wait until April to apply crabgrass control otherwise a second application may be necessary to control late season crabgrass seed germination.
- Establish lawns by sod throughout season as long as adequate water is available.
- Establish or renovate turf by seed. Prepare soil properly and get good seed to soil contact. Select turf mixes and blends appropriate to the site and to maintenance practices. Southern Illinois – March; Central Illinois – March15-April 15; Northern Illinois – April.
- Scout late March and into April for winter annual weeds such as henbit, chickweed and creeping speedwell. Remove before flowering or seed set.
- Order seeds and garden plants.
- Harvest finished compost from compost pile to use in planting holes.
- Sharpen tools for less strenuous gardening.
Tree pruning program Tuesday March 2 at 1 p.m. and repeated Thursday March 4 at 7 p.m. held at University of Illinois Extension at 801 North Country Fair Drive in Champaign using the University of Illinois Extension telenet distance learning system. No charge but please register by calling 333-7672 or email at firstname.lastname@example.org