I'm germinating coriander /cilantro and while the other sprouts do just fine at the controlled temp/humidity that I have, cilantro seems to be peculiar in that sometimes it will germinate just fine, and other times it won't. No real reason as to why.
I'm wondering if it's the watering (it tends to get over-watered since it takes so long to germinate) or if it's the moon cycles that affect this particular seed much more than others.
There are other sprouts like borage, basil, or onion which take longer to germinate, receive more water than usual, but grow just fine.
Coriander/cilantro needs dark to germinate. So, if you are having trouble with germination, try planting deeper. Soaking the seeds can be helpful, with a little hydrogen peroxide in the water to deter rots and molds. One to 4 hours should be enough to hydrate the seeds. Try a couple of ways of doing it, side by side, and see which works best for you. Optimum soil temperature for germination of cilantro is 55-68 degrees. You can use a thermometer thrust in the soil to check this, or figure that the soil is probably about 10 degrees colder than your average air temperature. Good luck!
Location: Northern Italy
posted 2 years ago
awesome! thanks. I'll start doing some tests based on this advice in the coming weeks.