Keep an eye on houseplants spending the summer outdoors. Water regularly -- when soil is dry to the touch.
Plants that dry out too quickly may need repotting. Wait to tackle this until the weather cools. You'll reduce watering if you apply a layer of mulch or compost (that acts as mulch) to pots in full sun.
Tropical plants need warmth to thrive. As summer heats up, keep plants well-watered. Fertilize every 10 to 14 days to replace nutrients being leached out of soil with frequent watering.
Inspect weekly for pest outbreaks.
Test Garden Tip: If houseplants spending the summer outdoors develop yellow foliage, it could be too much sun, too much water, or not enough fertilizer.