How to Fertilize roof air plant?
Balanced feed in spring and light repeat in growth season

roof air plant · Tillandsia tectorum
Plants need no compost; they are glued or wired to a support. Grow under glass in bright but diffused light with good ventilation. From spring to autumn immerse in rainwater twice a week (more in hot, dry conditions), drain well and allow to dry. Can stand outside in summer to benefit from light, rain and humidity. See Air plants for more
Balanced feed in spring and light repeat in growth season