I grew some asparagus from seed last year for the first time. Cooler makes sense, many plants grow better at cooler temps than they germinate. I moved mine to the bottom shelf of my light set up to grow on. Still under fluorescents, but closer to 60 degrees. I suppose fluorescents are "bright but not to sunny". If you had them outside then it would be a concern, but inside nowhere you have them is likely to be to sunny.

They will continue shooting up additional spikes. I too thought - I must have double seeded this one!, but by mid summer each single spike had turned into 12-15 long feathery fronds.

I have to admit, that due to all sorts of other complications, I never got the new asparagus bed dug, so I ended up tossing the starts :(

Mandolls, how long did it take to get to the 12-15 inch size? Thanx for the advice.

I actually don't quite remember. I know they were at least 6-8 " when I moved them out to the screened in porch at the end of May. ( I started the seed in mid Feb) I kept them alive all summer, and they continued to grow and multiply even though they were only in 9oz plastic cups.