I’ve noticed that the Draba cuneifolia seed left in the pot from the previous year’s plants, actually germinates in late summer. This year, I noticed seedlings in the middle of August, during a period that was showing no signs of cooling. Those seedlings have grown rapidly and threaten to cover the gravelly surface of my manufactured barrens with a carpet of blue-grey plants.
This is a close up view of some natural barrens in which I annually find Draba cuneifolia. The puzzling thing is that I have never found any Draba seedlings here in the fall. They don’t present themselves until February or early March.
I spent about an hour yesterday searching back-and-forth across the barrens for any sign of Draba seedlings. I found none. The reason why they develop so early in my container remains a mystery. The container gets no special consideration during the summer. It endures the same weather conditions and exposure to sunlight. It may be that the concentration of seed is so much higher in the container that early developing plants are easier to see. If my container plants don’t suffer from crowded conditions, I should have an abundance of seed produced next spring. I may transfer a large quantity of that seed to a small section of the natural barrens to see if that results in early plants in the natural environment.