Hi, Todd: You may have a problem or two, but we don't think that impatience is one of them. It's hard to tell what is going on here without knowing where you are, what variety you planted, and so forth, but it's probably time to think about another planting for fall. Your plants may have gotten too hot, but the fact that your first little floret was yellow from the get-go tells us that this may be a nitrogen deficiency and not just that your plant is going to seed. Make sure that your soil is neutral to slightly acidic, with plenty of nitrogen and not too much phosphorus. Use the Frost Dates calculator under Gardening above to get the probable date of your first frost, then count backward 100 days from then to plant. With the right soil, we think you'll do better in the coolness.
Hi, Todd: You may have a problem or two, but we don't think that impatience is one of them. It's hard to tell what is going on here without knowing where you are, what variety you planted, and so forth, but it's probably time to think about another planting for fall. Your plants may have gotten too hot, but the fact that your first little floret was yellow from the get-go tells us that this may be a nitrogen deficiency and not just that your plant is going to seed. Make sure that your soil is neutral to slightly acidic, with plenty of nitrogen and not too much phosphorus. Use the Frost Dates calculator under Gardening above to get the probable date of your first frost, then count backward 100 days from then to plant. With the right soil, we think you'll do better in the coolness.