This is how I entertain myself during the endless Denver winters. Another batch of cactus seedlings emerged today. Maybe they came up last night, but I was asleep, and didn’t hear anything, though the dog did get up with a start a little before five this morning.
Proud parent aside, the reason I’m posting these pictures is to show that GA-3 is not necessary to germinate echinocereus seeds, even though a lot of people insist that it is. This is Echinocereus dasyacanthus; the ungerminated seeds are clearly visible at the bottom of the picture. Seeds were sown on February 20.
These are germinating under vintage fluorescent lights; one “cool white” and one “grow light”. It’s possible the “cool white” is providing too much light because the seedlings whose picture I posted a couple of days ago were pink, which is a sign of excessive light.
Another picture with arrow as visual aid.