05/17/2023
⚠️ FROST WARNING ⚠️
Repost • These beautiful 20 degrees days have had ALL of us thinking summer, but if you’re a gardener in our part of southern Ontario (zone five on the hardiness map), then you know we typically always receive one or two frosts just before the May long weekend.
Tonight is one of those nights!
There are two frost warnings in the forecast this week, and here’s when you can expect to receive a chance of frost:
🛑 Tuesday, May 16th, overnight (tonight!)
🛑 Wednesday, May 17th, overnight (tomorrow)
What does this mean for your garden?
It means that you’ll want to bring in any tender plants and seedlings, and protect any tender annuals, that you have already planted in the garden.
What is safe to be left unprotected in your garden?
✅ Lettuce, chard, kale, onions, and most herbs (except for basil!).
✅ Ranunculus plants are safe to be left unprotected, as they love the cooler temperatures.
What needs protection during a frost warning?
🛑 Protect your basil, cucumbers, melons, squash, peppers and tomatoes.
🛑 Protect your young annual seedlings, and tender annuals, and your hanging baskets and any flowering plants you may have already planted in patio planters. You’ll want to make sure to protect your begonias, any dahlia plants you have outside, geraniums, petunias, and more.
How do you protect your tender plants?
✅ Bring your plants indoors, into a garage, a basement, or just inside of the house if you can. If your tender plants are already planted in the ground, you can place buckets or pails or plastic containers over top of the plants to protect them from a frost. Make sure to put a rock or a brick on top of any of these pots or containers, to make sure they don’t blow off over the night. We have also used old blankets and quilts, in a pinch, to place over garden beds, to keep the frost off of our tender plants.
Once all of our seedlings make it through the next two cold nights, the forecast looks safe to plant your gardens this coming weekend!
We always wait and watch for 10° nights, once we receive those temperatures consistently, tender plants can go into the ground.