Osmocote Advertisement

MAY: What to Do in the Garden


In the Edible Garden

  • Tomatoes, cucumbers, squash, melons, peppers & eggplant need at least 8 hrs. of sunlight for best fruit production.
  • Plant warm-season vegetables such as tomatoes, peppers, eggplant and vine crops after mid-May.Control cucumber beetles, carriers of cucumber wilt, as soon as cucumbers germinate to prevent disease. This disease will cause plants to wilt and die just as cucumbers start producing.Make a home for toads, which eat cutworms and other insects. Invert clay flowerpots in shady spots. Chip out a piece of the rim to give the toads an entrance to their home.
  • To insure pollination of sweet corn, plant several rows together in a block, rather than in one long row. Keep well watered, especially from tasseling time to picking.
  • The Agricultural Research Service has found that size & quality of tomato harvests increased significantly when plants were grown over red plastic. Potatoes & green peppers produced best when the plastic was white.
  • Plant flowers in the vegetable garden. They attract beneficial insects and make the garden pretty.
  • Plant mini-vegetables in containers.
  • Grow cucumbers on a trellis or in a tomato cage. This helps to save space and provides better air circulation, thereby reducing disease problems.

In the Ornamental Garden

  • Multi-flora petunias withstand heat better than other types and are more resistant to botrytis, a disease that attacks petunias during wet weather.
  • Watch for European pine sawflies on Scotch, Red, Jack and Mugo pines. Larvae have a black head, black legs and a dark stripe bordered by white stripes down the side of the body.
  • Use plastic milk jugs for seed irrigation. Take a large nail & punch holes 2 inches apart in the side of a jug. Bury with the neck protruding. Fill with water and screw on the cap. The water will gradually seep out providing a slow, deep irrigation for surrounding plants.
  • Prune spring-flowering shrubs such as forsythia and lilac after blooming.
  • Plant summer-flowering bulbs.
  • Plant perennials, annuals and herbs after mid-May.
  • Plant larger dahlia varieties 6-8 inches deep, and smaller varieties 3-4 inches deep after mid-May.
  • For best growth keep roots of clematis cool by mulching with straw or pine needles.
  • Dry grass clippings before using as a mulch. Do not use clippings that have been sprayed with a herbicide.

In the Indoor Garden

  • Adding fertilizer to a dry root ball burns the roots, damaging or killing the plant. Water dry houseplants before fertilizing & never fertilize wilted plants.
  • Increase your houseplant collection by taking cuttings. Root cuttings in perlite, potting soil or vermiculite.
  • Move houseplants to the garden when night temperatures remain above 55 degrees F.

categories

popular

Article Thumbnail
Spotlights
Treasures of the Woodlands

Tulips come from Turkey, but woodland wildflowers come from Chicagoland. Why not have someof both in your springtime garden?


Article Thumbnail
Blog
Butterflies in February?

On a sunny winter day a few years ago, I strolled into our Palos-area garden looking for signs of snowdrops


Article Thumbnail
Blog
Fit for a Queen

The juxtaposition is a little jarring at first, and then you start to smile. You’re downtown, driving along Lake Shore Drive ...


Article Thumbnail
Columns
Imagine That

I was awakened recently by the sound of a pigeon rattling my bedroom window. Peeking with one cautious eye from beneath my …


Article Thumbnail
Columns
I Sure Won’t Do That Again Next Year

This is the time of year that many of us look back in our horticultural rearview mirrors the same way we would if we’d just ...


questions

This past spring I planted a lacebark pine (Pinus bungeana) in full sun. As winter began, the angle of the sun’s rays has caused the tree to receive, at most, 4 hours of sun. What are sun requirements of evergreens in winter?

Our Russian sage (Perovskia) is full and bountiful but will not stay upright. Is there anything we can do? Is there a way to split some off when it has outgrown its space? Should it be trimmed back in fall or spring?

What ratio and amounts of fertilizer would you use for a perennial bed and a vegetable garden? For growing annuals in a greenhouse, should the fertilizer be fast or slow-release, organic or inorganic?

ChicagolandGardening Advertisement