HerbDoc describes an interesting gardening technique:
I know everyone is anxious to begin their spring planting, but as anyone who has seriously gardened in Rhode Island knows, it’s not safe to put out tomatoes, peppers or eggplant until Memorial Day. That is unless you follow this ingenious idea from a young mother I know. I like to call her the “Queen of Recycling” as her gardening practices include all manner of reused items.
She managed to convince a local water company to give her the damaged jugs that they could no longer use for refilling and delivery to their customers. Some have cracks or chips but they are perfect for giving heat seeking vegetables an early start. The bottom of the jug is cut off with a hacksaw and used as a hothouse by placing it over a potted plant or directly over the soil. Because the walls of the clear jug are thick and the overall size is bigger, they work much better than milk bottles.
I’ve used this method for the past several years since she graciously gave me four of these jugs. The one in the photo is a cherry tomato, but I’ve also covered my ancho peppers in the garden and have never lost any of them to frost. They are usually planted around May 1st and develop huge center stems as big around as my thumb and many flowers by Memorial Day. Water is applied through the top and down the sides of the bottle. Condensation will appear almost as soon as the jug is in place. My only caution is to watch the growth carefully! The first year I attempted this method, I had a hard time removing the jug without damaging the plant as it had grown right to the edges and almost to the top of the bottle. The leaves will be very deep green and you definitely will have tomatoes three weeks to a month before normal picking time!