So far the 2014 garden is off to a great start! At the end of May I shared a summary of what’s going well and what’s not-so-swell. At that time, the garden remained relatively pest-free. However in the short time since that post I’ve encountered to more prevalent invaders. The first pest is a mysterious, large, picky eater. The invader may be a deer, although there are no signs of jumping our 8-foot tall fence and the tracks left in a few places seem a bit large for a deer. (Unfortunately between rain and very soft soil the shape has been difficult to determine.) Whoever has been helping themselves has passed over scores of deer-favorite veggies in favor of our kale and pepper plants, exclusively.
Meanwhile, our other main invader is not nearly as elusive or picky. This year I’ve experienced the earliest and most prolific invasion of cucumber beetles ever. They have recently backed off without intervention from me, so I’m hoping the garden will be able to weather their presence without any (natural) chemical or other intervention from me. Though they have impacted several different crops, so far the only casualty has been my acorn squash (wiped out almost entirely). Fortunately there’s plenty of time left in the Michigan growing season to reseed squash. Just in case you’ve also encountered a cucumber beetle invasion, here’s some information and a few tips for letting them know who’s boss!
What Are Cucumber Beetles?
According to our buddies at Wikipedia:
“Cucumber beetle is a common name given to members of two genera of beetles, Diabrotica and Acalymma, both in the family Chrysomelidae. The adults can be found on cucurbits such as cucumbers and a variety of other plants. Many are notorious pests of agricultural crops. The larvae of several cucumber beetles are known as corn rootworms.”
Cucumber beetles actually look like cute little yellow lady bugs. (They had me completely fooled during my first year as a CSA grower!) Don’t be fooled. These little guys want to eat your cucurbits to oblivion. That means they’ll feast on cucumber, pumpkin, zucchini and hard squash plants, to name a few. They also appear to be nibbling on my beans and possibly my ground cherries.
Here is a description from the Farmers’ Almanac to help you identify cucumber beetles:
“Adults are about ¼ inch long and have a yellow and black striped abdomen and a dark colored head and antennae. Look for holes and yellowing and wilting leaves. Crop yield will be low; and plants will produce yellow and stunted fruits. The larvae are worm-like, white, dark-headed, a have three pairs of legs on the thorax.”
Transforming leaves into swiss cheese (or gobbling them up entirely) aren’t the only ways cucumber beetles wreak havoc in a garden. They are also carriers for diseases such as bacterial wilt and cucumber mosaic virus.
Cucumber beetles overwinter in plant debris and wooded areas near your garden. Once temperatures warm, they can move into the garden to begin feasting on your newly transplanted seedlings. While the adults can eat leaves, stems and blossoms, the larva will also feast on the plant’s root system.
How to Control Cucumber Beetles
Here are some natural (or at least, free from synthetic chemicals) methods you can use to address cucumber beetles in your garden.