Southwest Michigan vegetable regional report – June 10, 2015

Time for herbicide drift damage to show up on tomatoes.


Temperatures have averaged near normal with highs of 69 to 82 degrees Fahrenheit and lows from 45 to 58 F. The area received 0.25 to 1 inch of rain. Rain did not hinder any field activities. We are at 626 base 50 growing degree days (GDD), which is slightly ahead of last year’s 576.


Asparagus harvest is complete.

Tomato, pepper and eggplant transplanting, staking, tying and pruning continues. Michigan State University Extension reports Colorado potato beetles are present. This is also the time when herbicide drift damage begins to show up on tomatoes. Herbicides were applied to corn 10 to 14 days ago and it takes that long for drift damage to appear. Damage will first show as non-growing plants followed by a yellowing of the growing point leaves. The yellow will eventually turn white and plants will continue to be stunted. If these symptoms are evident in your tomatoes, it is best to replace plants as soon as possible if you have replants available. Affected plants will not grow out of the symptoms and will not yield.

Potatoes are 14 inches tall; no flowers are visible at this time.

Sweet corn planting continues and early planted fields are around 24 inches tall.

Snap peas are being harvested and early planted English peas have pods that are 2 to 3 inches long.

Harvest from transplanted, tunnel-grown yellow squash and zucchini will start this weekend, cucumbers are about a week behind. No sign of significant cucumber beetle populations at this time. Watermelon transplanting is complete.

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