On the Radar: May
by Cheryl Gross, Advanced Master Gardener
BEGIN seed starting the first week! In northern Michigan, delicate vegetable plants should be ready for the garden by Memorial Day. Get a jump on the season with seed starting NOW.
Some vegetables are best started by seed and like the cool spring temperatures. Seed peas, carrots, lettuce, spinach and such outdoors before warm-weather sensitive plants.
Later in the month, purchase your bedding vegetable plants that are easily added to the garden as started plants. Tomatoes, eggplants and the like do best when the season is extended, and they are planted with a head start.
Insects of Early Spring: They’re For the Birds!
by Nate Walton, MSU Extension Master Gardener Coordinator
Robins may be the official first sign of spring, but let’s not forget that they and other songbirds are busy stuffing themselves with bugs! Insects and other invertebrates provide these birds with the protein and fat they need to complete their migratory flights and lay eggs so that they can produce more songbirds. The first insects to become active in the spring are those that spent the winter as adults. Some of these you can even see in late winter, like this winter crane fly walking on the snow on a warm day.
Many flies (Order: Diptera) are among this group that appear in the spring as soon as the temperature is high enough for their wing muscles to function.
Lawn and garden pests that are a nuisance early in the spring are usually those that are not adults, but larvae still living in the soil still. European chafer grubs are one of the earliest scarab beetle larvae that migrate from the lower layers of soil to feed on the roots of your lawn turf in the spring. Cutworms, too, can be a problem for early spring gardening as they will snip off your starts just an inch above the soil’s surface. Flocks of songbirds feeding on these scrumptious snacks may be your first sign of a lawn or garden infestation.
One of the biggest problems for early spring gardeners to watch out for are the bud chewing insects. Many of these are small members of the group of insects that includes butterflies and moths (Lepidoptera). The adults of these species lay eggs on twigs in early spring and the larvae feed on buds and leaves as they begin to emerge from dormancy. Some will even bore into the terminal end of a shoot, leaving a hollowed–out twig at the end of a branch. These insects often leave signs of their presence such as strands of silk and frass (insect feces).
As they grow, some of these tiny Lepidoptera larvae will grow larger and tie the plant’s earliest leaves together into a bundle or roll, which is why they are known by the common name: leafrollers. Keep an eye on your favorite trees and shrubs this spring for these bud chewers so that you can decide if you need to take action to protect them. Of course, it’s always a good option to just leave them for the birds!
Note: All photos by N. Walton, MSUE