My radish mix, buckwheat/sunflower mix, 5 pea blend, are all fast growers. Radish
about 8-10 days to harvest, peas and sunflower 12-15. All depends on temp and light.
I grow under one single 4ft LED. I can speed up growth by running the light 24/7 for a day
or two. But I usually have more than we can consume.
Salads are all S L O W growing. Mustards a bit faster, 12-15 days.
Your issue might be temps. They all like it a bit cooler, 65-70. Shade cloth might help over
70º. Outside in the garden I can grow all summer season using dense planting and a shade
frame. Dense planting keeps the leaves and soil cooler. Greenhouse growing needs shade
and good fan airflow.
I can easily harvest a bag a day, (just for home/family use). And purchasing by the pound
is so much cheaper. I pay average 7$ per pound. Market growers typically buy 5-20lb bags
to make it profitable.
Typical harvest and last nights salad....I'm guessing 20cents in seed cost buying bulk.
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