A cold snap arrived later than it should have this spring, well after I had trusted the season had turned. With no permanent structures allowed in my rented yard, here is how I improvised protection overnight, and where it failed me.
I have kept a plain notebook since my first season of gardening, writing down what I actually did and what actually happened. It has taught me more about my own small yard than any generic chart ever could.
For two years I started nearly everything indoors on my windowsill because it felt like the serious way to garden. Some of those seedlings never really recovered from being moved. Here is what changed my mind.
My landlord's lease is clear about no permanent structures in the yard, which rules out a built in cold frame. Here is how I actually toughen up seedlings using trays I can carry, sheets I already own, and a lot of paying attention.
I don't have a grow room, a spare bedroom, or proper shelving lights. I have one south facing window in a rented rowhouse, and I've had to learn what actually keeps seedlings from turning into pale, leaning stems.
The printed last frost date for my area is a starting point, not a promise. After one bad March I stopped trusting the calendar and started trusting the ground, the sky, and my own notebook instead.