I sprouted sunflowers indoors on a window sill for a change. They did this. Then I put them outside in full sun and they stiffened right up. Don't they tend to be leggy anyways?

This post was edited by cold_weather_is_evil on Tue, Apr 8, 14 at 2:05

If it is 3 weeks until you can transplant them out side then you will have to do an interim transplanting indoors. Plant them deep in the new pots, burying most all of that bare stem.

Dave

Well, to me they donâÂÂt really look large enough to be outgrowing their container just yet. The medium theyâÂÂre in appears to be a little too wet and probably a little too shallow. Transplanting to larger pots later will definitely be beneficial. For now, IâÂÂd just try to straighten the seedlings up, add more of your growing medium (to cover most of the stems as Dave has suggested) and cut down on the watering.

Art