If you have a solar heated of energy efficient minimally heated greenhouse, then this is the time of year that you really need to pay attention to planting now for winter greenhouse growing. Be sure to check out my free ornamental and vegetable planting schedules here.
You absolutely need to get those seeds ordered and started before the days get really short, the nights get long and cold sets in! Seedlings don’t take up much space so you can always make room for your next crop.
When it comes to veggies in cool greenhouses, focus on the leafy greens, cole crops and root crops.
When it comes to cut flower ornamental for the winter bouquet, look for sweet peas (variety “winter elegance”), pansies (most any do great), and snapdragons (stick to the bred for winter “Maryland” series).
Look for many more choices of both ornamental cut flowers and vegetables suitable for easy and big harvests for winter greenhouse growing in the book “Greenhouse Gardener’s Companion.”