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Garden Projects for Early Spring

A few early preparations for the spring gardening season will bring benefits all 
year long.

1.  Clear Drainage Ditches 
Leaves and debris gather in drainage areas over the winter. Now is the time to ensure that the spring rains will have adequate runoff. Spring seedlings do best in soil which drains well. Because vegetative growth is at a low point in early spring, this is the easiest time of year for clearing drainage ditches. And be sure to put the cleared material, usually dead leaves and small branches, into the compost. Spring compost piles are commonly short on carbon-rich materials, and every addition helps.

2.  Repair any bowed sides to raised beds. Fix trellises and fencing.
Soggy winter soil puts a strain on raised beds; sometimes a stake will rot and give way. Any bowed or leaning sides should be fixed now. Dig back the soil behind the bowed side and drive in new stakes on the inside of the sideboards with a slight inward lean. Push sideboards up to stakes and fasten well with screws or nails.

Trellises and fencing are also easiest to repair in early spring, with less growth to work around and fewer roots to disturb. Setting new fenceposts, however, is best done after the spring rains have had a chance to drain through the ground. If the water table is too high, post holes will fill with water as you try to dig.

3.  Weed young spring weeds. Mulch bare spots in beds.
Any weeds which appear in your garden beds will be easiest to pull now, as the roots are shallow. Covering bare spots with mulch or ground cover will minimize the emergence of new weeds. Adding mulch to a depth of 3 to 4 inches is usually sufficient. Black plastic sheeting can also be used to cover the beds before planting as a way to suppress emerging weeds. And if you flip the sheeting over once a week you may likely find slugs which have been hiding in the bed. This is a simple way to reduce the slug population in garden beds. 

When adding mulch to garden beds or around the base of fruit trees, keep the mulch a few inches away from tree trunks and the crowns and stems of plants. This will help reduce rot on the stems of young plants and will protect the bark of young fruit trees.

4.  When it's dry enough, 'top dress' beds.
Top dress garden beds with compost or well-seasoned manure in preparation for planting. Resist the urge to dig the bed; established beds have a complex soil ecosystem which is best left undisturbed. Nutrients added from the top will work their way down into the soil.

5.  Early spring is the time for lime.
Soils with a pH below 6.2 will benefit from the addition of lime. Dolomite is the finest grind, and is recommended. With ground limestone it will take twice as long for plants to derive any benefit from it. Ideally, lime should be added several weeks before planting. Hydrate lime, or "quick lime", is not recommended, as it can change the soil pH so rapidly that plants may be damaged. Cover newly limed beds with plastic during heavy spring rains to prevent runoff. Soil pH can be determined by using a soil pH test kit.

6.  Prepare your lawn for spring.
Rake the lawn to remove dead growth and winter debris. This helps bring light and air to the soil level, encouraging the grass to grow. Re-seed bare patches of lawn. Rake bare spots firmly with a metal rake before seeding. Sprinkle grass seed into a bucket of soil and spread evenly over the bare spot. Keep well-watered until seeds germinate and the new grass establishes. Pre-emergent herbicides such as corn gluten may be applied now.

7. Thin dead foliage of ornamental grasses and ferns.
Once new growth begins. it becomes difficult to thin ornamental grasses without damaging the plant. New growth will quickly replace the culled foliage. And if you didn't get around to this last fall, pull the old tomato, squash and other plant skeletons to clear the vegetable bed for planting. Plant skeletons can be added to the compost if you are sure they do not harbor any plant disease.

8.  Plant early spring vegetables when soil is workable. 
Soil is ready for gardening once it is free of ice crystals and crumbles easily. Soil that is too wet is easily compacted, reducing beneficial soil aeration. Common early spring crops are peas, spinach, lettuces and leeks. For a prolonged harvest, plant several varieties, each with a different maturation date. Follow these crops with broccoli, cabbage, radishes, kale, turnips, new potatoes and onions. Mulch early bulbs if you live in areas where freezing temperatures hang on.

9.  Protect seedlings from hard frosts. 
Early spring plantings are vulnerable to hard frost which can set in overnight. If you expect a hard frost, cover seedlings overnight with anything you have on hand - an overturned bucket or cardboard box (with a rock on top) or large flower pot, a portable garden cloche, or a cold frame. If your garden has the space, and your budget allows, a starter greenhouse is ideal for starting seedlings early in the season and protecting them from inconsistent early spring weather.

10.  Divide perennials. Clear and mulch perennial beds.
For easier handling try to time the division so emerging shoots are only 2 to 4 inches tall. Prepare new beds for perennial flowers by spreading a 6-inch deep layer of organic matter (i.e. peat moss, compost, rotted manure) and work in deeply. Plants growing in deep, rich soil are less likely to suffer from summer drought. Existing perennial beds can be cleared of old plant debris and mulched to prevent weed growth. Mulch should be applied around, but not over the sprouting root mass of each plant. 

Stakes can also be put in the ground now for sprouting perennials such as asparagus, which may need support for it's tall ferns later in the season in gardens exposed to wind. Be sure to set the stakes well clear of the root mass so as not to disturb emerging shoots.

11.   Prune out dead or damaged branches on shrubs and trees.
Prune unwanted branches of trees and shrubs after new growth has begun. Cut back any remaining dead perennial foliage from last season. Prune roses just before they start to bud out. Spring blooming trees and shrubs, however, should not be pruned in late winter; their flower buds are ready to open as temperatures warm. Azaleas, forsythia, lilac, dogwood, and other spring shrubs can be pruned after they bloom.

12.   Prune fruit trees. 
Fruit tree pruning is best done in late winter or early spring. Prune well before buds begin to break into bloom or the tree may be stressed resulting in a reduced crop. Pick up and remove the pruned clippings, especially if you intend to cut the grass under the tree during summer.

13.   Remove stakes or relax wires installed on trees planted last fall. 
Allowing a little swaying of tree stems results in sturdy yet resilient plants. Thin out some branches of trees which have a history of leaf spot diseases. Pruning will improve air circulation and penetration of sunlight, which in turn can reduce the incidence of disease. Remove tree guards or burlap wraps from the trunks of young trees or shrubs. This prevents moisture buildup beneath the wrap, which can encourage rot and promote entry of diseases.

14.   Transplant any existing shrubs you want to move before they begin to leaf out. 
Soil conditions in early spring are favorable to transplants because the soil is more consistently moist, which helps new rooting to expand from the transplant zone and reach out for more nutrients. To transplant, use a spade to find the edges of the main root mass, then dig down and under to loosen the root ball. Dig the new hole several inches wider all around, and add soil amendments such as compost or organic fertilizer. Once the transplant is set in place, filling in around the sides with lightly compacted soil will promote lateral root growth.

15.   Apply horticultural oil sprays to pear and apple trees. 
Apply oil spray to pears just as the buds begin to swell and then again 10 days later to control pear psylla and pear leaf blister mite. Make a single application of oil on apple trees when a half-inch of green tissue is visible in developing buds.

Also apply oil to ornamental trees and shrubs 
Apply dormant oil to trees and shrubs which have a history of aphid, scale or spider mite infestations. Destroying these pests safely with spring applications of horticultural oil will reduce your need for pesticides later in the growing season. 
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