Gerbera daisies (Gerbera jamesonii) are celebrated for their vibrant, large blooms. Although often treated as temporary annuals, these plants can successfully transition into long-term, thriving houseplants. Cultivating them indoors requires replicating their native environmental preferences. This guide provides the specific actions necessary to grow Gerbera daisies indoors for continued health and flowering.
Ideal Conditions for Indoor Placement
The most important factor for a healthy indoor Gerbera daisy is light exposure, which directly fuels its flowering cycle. These plants demand high levels of bright, direct sunlight for a minimum of six hours daily to encourage robust bloom production. Placing the pot near a south-facing window, or a west-facing window that receives intense afternoon sun, provides the required intensity.
Insufficient light results in the plant diverting energy away from flower development, leading to only foliage growth. Rotating the pot weekly ensures all sides receive adequate exposure, promoting symmetrical growth.
Gerbera daisies thrive in moderate temperatures, mimicking their sub-tropical origins. Daytime temperatures between 65°F and 75°F are suitable for active growth and flowering. They benefit from a slight temperature drop at night, ideally into the low 60s, which cues the plant’s metabolic processes.
Standard household humidity levels are adequate, but plants should be protected from rapid changes. Avoid placing pots near heating vents or air conditioning units, as dry drafts stress the plant and increase the risk of pest infestations.
Hydration and Substrate Needs
Proper management of water and soil composition is fundamental, as indoor Gerbera daisies are vulnerable to root rot. The potting mix must provide excellent drainage to prevent water stagnation, which quickly leads to anaerobic conditions. Amend a standard commercial potting mix with materials like perlite, coarse sand, or pumice to ensure rapid water movement and aeration.
Water thoroughly until it flows freely from the drainage holes. This deep watering encourages a strong root structure. Before the next session, allow the top one to two inches of the substrate to dry out completely.
Avoid water contact with the crown of the plant—where the stems meet the soil—to prevent fungal diseases like crown rot. Watering from the bottom, by soaking the pot in a shallow tray for about 20 minutes, hydrates the roots without wetting the crown. Promptly discard any excess water remaining in the saucer. Use pots made of porous materials, such as terracotta, which facilitate better evaporation and moisture regulation.
Promoting Blooms and Growth
Gerbera daisies are heavy feeders during their active growth and flowering season, requiring regular nutrient supplementation. Apply a balanced, water-soluble liquid fertilizer, or one high in phosphorus, every two to four weeks. This consistent feeding schedule fuels the development of new flower buds and maintains plant vigor.
Only apply fertilizer when the plant is actively growing (spring through fall), and always after a regular watering to prevent root burn. Reduce or stop application entirely during winter when growth slows. Over-fertilizing leads to a buildup of salts, which damages roots and inhibits water absorption.
Deadheading, or removing spent flowers, redirects the plant’s energy toward new growth. When a bloom fades, the plant allocates resources to seed production. Removing the entire flower stalk down to the base stops this process, prompting the plant to produce more flowers.
Regularly inspect the foliage and remove any yellowed or damaged leaves. This improves air circulation around the plant’s base and minimizes sites for potential disease entry.
Identifying and Treating Common Problems
Indoor Gerbera daisies can attract common houseplant pests, including spider mites, aphids, and whiteflies. Spider mites are identified by fine webbing and stippling damage. Aphids appear as small, pear-shaped insects clustered on new growth. Whiteflies are tiny, moth-like insects that flutter when foliage is disturbed.
Early detection is key; inspect the undersides of leaves weekly. Treat small infestations by wiping leaves with a damp cloth or using a strong jet of water. For established problems, horticultural oils, such as neem oil, or insecticidal soaps offer effective control.
Fungal issues, particularly powdery mildew, often result from poor air movement. This appears as a white, powdery coating on the leaves and stems. Ensure adequate spacing and use a small fan to gently circulate air, which prevents conditions favoring fungal development.
If an infection occurs, immediately remove infected leaves and apply a suitable indoor fungicide. Addressing the underlying cause, such as improving circulation or adjusting watering, is the most reliable long-term solution.