Why Sundews Produce Dew Outdoors But Not Under Lights

Devon's sundews produce ample dew outdoors (even cloudy/rainy) but almost none under 4-foot shop lights 12" away. He wondered if lights are too close and drying them.

Christopher (not Jeff) responded: his D. adelae produce heavy dew within 2" of fluorescents at 40–50% humidity. The issue is light intensity/spectrum—even overcast outdoor light exceeds indoor levels. Move plants closer to cool-white T12 40W tubes.

Also, frequent in/out moves stress plants from temperature/humidity swings. Keep them in one adapted location.

Good Growing!

Christopher