Begin to harden off warm-season transplants, moving them into a cold frame or protected area.
Gradually move houseplants outside to protected areas. Large houseplants in plastic pots should be slipped into larger heavier pots to prevent them from falling over in wind. Guard against overexposure to afternoon sun. Carefully monitor for insects during their time spent in the garden.
Overwintered tender annuals or tropicals (e.g., hibiscus, gardenia, geranium) may be pruned, fertilized, and taken outside once night temperatures reach 40 degrees.
Amaryllis bulbs (in their pots) can be moved to a protected spot in the garden where they receive morning sun. Fertilize twice a month with a dilute 15-30-15 mix.