This is really odd. I planted a lot of steed feed seed in my cornerstone (placed in a Uber2 prime world), then used insta-growers to make them ripen instantly. After using one or two insta-growers, the remaining steed feed seeds won't ripen anymore. I get the whole animation (mark area of effect when first pushing R, then the "summoning" animation when holding R longer, and so on), the insta-grower is also subtracted from my inventory, but the seeds just won't grow. I tried to relog (seeds still not ripened) and used approximately five or six insta-growers to test, but all to no avail. It's particularly strange because the first few insta-growers worked (I also used them to make fertilizer quickly before crafting steed feed seed). Any ideas?