Canadian Gardening: What's up in the garden?, 3 by June_Ontario

June_Ontario wrote:
I'm direct-sowing my seeds this year, either mid-May or mid-June. I'd normally aim for the end of May, but I'll be away on vacation then.

Greenhouses are a mixed blessing! I have one that is heated with an electric fan heater to keep it just above freezing, but the temperature inside will drop to minus 5C when the outside temperature is minus 25C. And then on sunny days (like today), even with all the vents and doors open, the greenhouse interior will overheat to 25C. I use it mainly for overwintering potted hardy cacti (in a sand bench), tender shrubs, and containerized perennials. Last spring, the greenhouse got too warm and the cacti flowered early.

In the garden, Iris histrioides 'George' has begun blooming.