Post #1620615
2026-04-21 14:53 UTC
Sorry you about made me spit out my coffee.
Beans, zinnas and sunflowers are some of the less picky species for substrate. Both sunflowers and beens have large seeds and enough stored energy to supply the plant to the second true leaf. Zinnia's have extremely durable and high germinating seeds. For testing seedling mixes they are a poor choice. Mainly because they will do well in most things.
There is no "correct" seedling mix for everything. Every species has its own optimal growth medium based upon its unique needs.
What works well for tomatoes is too fine for squash. What works for cantaloupes holds too much water for watermelons. Then there is the whole slow germinating flower seeds. That's a mess of different preferences.
Replies (1)
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@yo_scottie_oh@lemmy.ml 2026-04-21 15:22
I see your point. In the case of the YT video I linked in the OP, the tester considered variety of crops as a factor, but perhaps you're right that those particular crops do not represent a diverse enough set of "pickiness" among seeds. Toward the end of her video, she does acknowledge that what makes sense for her may not make sense for all of her viewers growing different crops in different climates, and she encourages her viewers to run their own tests. Thanks for chiming in on that.