Give your houseplants room to grow. Not every day is good for outdoor gardening, so now is a good time to do some work indoors. Transplant houseplants in March to prepare them for a spring growth spurt. Always use a clean pot. Scrub salt and dirt from old pots and rinse out new pots before using. Remember to never put a plant into a pot more than one size larger than its current pot. Otherwise, it will disappoint you by spending more energy growing underground than up top. Prune dead or circling roots to encourage new ones to form. Always remove dead leaves, old flowers, and any salt that have built up around the stem of the plant or on top of the soil. And don’t forget to wash the leaves to remove dust from them. Finally, water thoroughly but do not let the pot sit in the water that has drained through.