Malvaceae Family

The Malvaceae family is perhaps less commonly associated with houseplants, but it contains some spectacular indoor specimens — most notably Hibiscus rosa-sinensis (Tropical Hibiscus), which produces flamboyant blooms, and Abutilon (Flowering Maple). This family is characterised by large, showy flowers and a preference for bright, warm conditions that mimic their tropical or subtropical origins.

Maximum light is essential — Hibiscus will not flower without at least 4–6 hours of bright light.

Keep the soil consistently moist during flowering; drought triggers bud drop.

Deadhead spent flowers to encourage continuous blooming.

Hibiscus blooms last only one day — plant prolifically to maintain visual impact.

Fertilise heavily with a high-potassium fertiliser (tomato feed works well) in summer.

Prune back by one-third in late winter to encourage bushy growth.

Watch carefully for aphids, spider mites, and whitefly — Hibiscus is a magnet.

Bring outdoors to a sheltered spot in Nepal's warm season for maximum blooms.

Do not allow temperatures to drop below 10°C — these are tropical plants.

Yellow leaves usually indicate overwatering or insufficient light.

Very bright light — ideally 4–6 hours of direct or near-direct sun. A sunny south-facing window or a covered balcony during Nepal's warmer months is ideal. Without adequate light, Hibiscus will not flower.

Keep the soil evenly moist during the growing and flowering season. Do not allow it to dry out completely. In winter, when growth slows, reduce watering but do not allow the rootball to dry fully.

18–30°C for best blooming. Hibiscus tolerates up to 35°C if humidity is maintained. Below 10°C causes stress, leaf drop, and possible dieback.

50–70% is preferred. Dry air encourages spider mite infestations, which are the primary pest problem for Hibiscus. Use a humidifier or mist the foliage in the mornings.

Every 2 years in spring. Hibiscus blooms better when slightly root-bound, so do not rush to upsize. A pot that is too large causes excess moisture and poor flowering.

Rich, well-draining mix: 50% potting mix, 20% perlite, 20% coco coir, 10% compost. Good moisture retention is important, but never waterlogged.

Fertilise every 2 weeks during the growing season with a high-potassium, low-nitrogen fertiliser (such as a tomato feed). Phosphorus supports root health; potassium drives flowering. Avoid high-nitrogen feeds that encourage foliage at the expense of flowers.

Pro Tip: In Nepal's warm season (April–September), move your Hibiscus outdoors to a sheltered, sunny spot. The combination of natural humidity and bright outdoor light often triggers spectacular, continuous blooming.

Stem tip cuttings taken in spring or summer root readily in moist perlite or water. Take cuttings 10–15 cm long with 2–3 leaf nodes, remove lower leaves, and apply rooting hormone. Roots appear in 3–6 weeks

Aphids — clusters on new growth and flower buds; blast off with water or treat with insecticidal soap.

Whitefly — clouds of tiny white flies under leaves; use yellow sticky traps and neem oil.

Spider mites — in hot, dry conditions; increase humidity and treat with neem oil.

Bud drop — not a pest, but caused by drought, overwatering, or sudden temperature change.