Monthly checklist · summer
Houseplant Care in August
August is the last full month of strong growth. Anything you start now will mature before the October slowdown.
Quick answer
Final cuttings of the year. Last big repot opportunity. Start gradually reducing fertilizer as the month ends.
Light in August
Sun angle starts to drop. Light intensity at south windows decreases noticeably by late August.
Watering in August
Still at peak summer frequency. Watch nights cooling toward month-end — plants may slow water uptake.
Pests and problems to watch in August
Bring outdoor-summered plants in starting late August. UW Extension recommends a 2-week step-down (full shade for 1 week, then indoors) plus quarantine inspection.
What to plan now
Plan indoor spots for outdoor plants returning. Order grow lights before they ship out for winter.