There’s a reason why the last frost date in Michigan (the reasonable date on which you can plant outside in the spring without worrying about frost harming your plants) has been moved to May 18. Last night (May 12/13) we had a visit from good ole Jack Frost! Pretty strange considering the old Last Frost Date was May 10 and we’ve been having beautifully warm weather before this sudden cold snap. Then again, this is Michigan, and it wouldn’t be spring if you didn’t have to trade your flip flops for the winter coat all in the same week at least one time…
I’m not sure if you would call it impatience or optimism, but it was sooo warm last week that I couldn’t resist the urge to plant out at least one warm-weather crop. My original plan was to transplant just three golden zucchini plants… I planted six. Here’s what I did to keep these little guys cozy over the very cold weekend (and right through last night’s frost).
On Friday afternoon I covered the raised bed with a plastic row cover. The row cover is attached with utility clips to hoops made from PVC pipe. The zucchini share a bed with radishes which actually prefer the cold weather. Fortunately these are the Rat’s Tail radishes which I’m growing not for the root but for the edible seed pods. The row cover will warm them up substantially in sunny conditions, causing them to bolt (grow faster and produce a flower). Bolting is bad for regular radishes because it alters the taste and texture of the root, but in the case of these radishes, a little extra heat will just move the I-want-seed-pods process along a smidge faster.
In theory, a row cover should be enough to keep my precious golden zucchini plants from being frost-bitten. But since I got a little overzealous and planted out six instead of three, I decided to bring in some insurance. Enter the cloche (pronounced “klohsh”). A cloche is a tool that originated in France to keep plants from being harmed by frost and to force their early growth. The cloche is typically bell shaped and made from glass. Here’s a picture of a classic cloche.
I’m not fancy enough to have beautiful French cloches like the one above so I used my own micro-farm-style cloches: mason jars.
The zucchini plants were covered from late on Friday afternoon all the way through this morning (Monday). When I first placed them over the plants, it was chilly and windy but the sun was shining, and they looked like like the picture above. When I retrieved the cloches this morning, the plants looked like this:
So based on my experience, the combination of row cover and cloche worked beautifully! My zucchini plants are ready for spring!
Other Plants in the Garden
Everything else that is planted out in the garden is frost tolerant – lettuce, spinach, arugula, chard, peas, carrots (teeny tiny seedlings), beets (just now coming up), onions, strawberries and a few other things I can’t think to name right now. There is one sad exception: The potato plants.
Since potatoes are planted out so early, my novice-farmer brain assumed that they are frost tolerant. But as I was coming in from the garden this morning I noticed that many of the leaves looked very frost bitten and dark. What a giant bummer because they have been coming up SO nicely (about 4 to 6 inches each)! One of the garden tasks I was planning for this afternoon was hilling potatoes. After doing some quick research it appears that I just need to trim the dead/damaged leaves and the plants should continue to grow just fine. Next year I’ll throw a row cover over these too!
The only thing planted in the Fenceline garden right now is turnips… or perhaps I should say “was” turnips. These are frost-tolerant and were coming along nicely… until one or two certain four-legged creatures who are otherwise quite lovable dug half of them up. Not. Happy. Time to get that electric fence fixed…
The other heat-loving plants have been hiding out in the greenhouse snuggled together on the shelves near the heater which came back into action for the weekend. After today the heater should be going into hibernation until fall.
Also the blueberry bushes are starting to blossom! This is exciting but also a bit sad because I was planning to transplant them to their permanent home before they blossomed. (They are currently in large pots inside the garden fence.) I suppose that task will now have to wait until fall, which is ok, because I’m still not sure where I want to put them.
Did you have any frost issues in your garden? Is anyone out there going to be adventurous and transplant heat-loving plants before the actual last frost date? I’d love to hear what you’re up to!
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