Thin out any off-type plants with dull leaves. Very hardy and generally pest-free. It’s a very easy plant to grow. Flowers are self-incompatible, which means they can not be fertilized by pollen from other flowers on the same plant. To save seeds, several individual plants are required to maintain genetic stability — at least 10, but 30 or some would say 100 or more is better. Therefore it’s hard to save seeds on a small scale.
Try to plant in a location that enjoys full sun and remember to apply water fairly sparingly. Keep in mind when planting that Green Glaze is thought of as very hardy, so this plant will typically do well in a variety of different extremes of cold temperature. Ideally plant in loamy soil and try to keep the ph of your soil between the range of 6.0 and 7.5 as Green Glaze likes to be in weakly acidic soil to weakly alkaline soil.By our calculations, you should look at sowing Green Glaze about 90 days before your last frost date.
Transplants well.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Green Glaze is a very hardy plant.Introduced by David Landreth in 1820
The oldest variety of collards in the U.S. Was a colonial american favorite in the vegetable garden. 1
Collard
1 “Vegetable Gardening the Colonial Williamsburg Way: 18th-Century Methods for Today’s Organic Gardeners, Author: Wesley Greene