How to Grow Houseplants: Complete Indoor Gardening Guide

Light

Most houseplants prefer bright light with some direct sun. East- and west-facing windows are ideal; south-facing works if plants are not against the glass.

Temperature

60–70°F suits most. Beware: sunny, unventilated windowsills can overheat.

Humidity

All houseplants (except cacti) dislike dry air from radiators, vents, or stoves. Increase humidity by setting pots on trays of moist pebbles or using a humidifier.

Watering

Check soil with your finger: water thoroughly when the top inch is dry. Don't water again until it's dry at that depth. If soil pulls away from the pot, it's too dry; if constantly wet, roots rot.

Feeding

Fertilize only during active growth (spring/summer). Flowering plants prefer low-nitrogen, high-phosphorus food. Apply at half the label rate but same frequency.

Potting and Repotting

Moisten supplied potting mix before use. When repotting, choose a pot 1–2 inches larger or refresh the same pot by removing an inch of soil/roots and trimming foliage by one-third (not for Clivia). Use quality houseplant potting soil, firm gently, and water well.

Pest Control

Start with a strong spray of tepid water in the sink. If needed, dip foliage in soapy water (liquid soap, not detergent). For persistent pests, mix 2 oz rubbing alcohol, 2 tbsp Ivory liquid soap, and water to make 1 quart; spray thoroughly, hitting leaf undersides and tips. Commercial sprays are a last resort.

Summer Vacation

Most houseplants enjoy summer outdoors. Acclimate in shade for 2–3 weeks before moving to sun. Bring indoors when nights drop below 45°F.

Trimming

Trim vigorous varieties during the growing season as needed.