Airy or Loose Buds
Small, light, fluffy buds with elongated stems between calyxes and sparse trichomes. Most commonly caused by under-lighting during flower or chronic heat stress, but also normal genetics in some sativa-dominant cultivars. PK boosters and bloom feeds will not compensate for insufficient light.
What usually causes it
- Average canopy PPFD below ~600 umol/m2/s during flowering
- Lights-on temperatures above 28-30 C in late flower (heat-stretching the calyxes)
- Low DLI from a short photoperiod, weak fixture or excessive lamp distance
- Sativa-dominant genetics that naturally produce open structure
Related product categories
Terms worth knowing
Walk the questions if you are not sure this is the match. The notes above are the same ones the tool ends on.