Aeschynanthus speciosus aka Lipstick Vine

Aeschynanthus speciosus has moderate care difficulty, requiring consistent attention to humidity, watering, and light conditions. It needs bright indirect light, regular watering without waterlogging, and high humidity—ideally above 50%. The plant is sensitive to temperature fluctuations and drafts, and may drop leaves or buds if moved or stressed. While not as forgiving as easy houseplants like pothos, it rewards attentive care with spectacular flowers.

Aeschynanthus speciosus develops semi-erect or trailing stems reaching 60-80 centimetres in length with a spread of approximately 80 centimetres. The growth rate is moderate. Leaves are fleshy and glossy dark green, measuring 5-15 centimetres long and 2-5 centimetres wide. The trailing habit makes it ideal for hanging baskets where stems can cascade gracefully downward.

Aeschynanthus speciosus thrives at temperatures between 16-24°C (61-75°F) during active growth. It prefers slightly cooler growing temperatures and minimum winter temperatures should not drop below 16°C. Avoid placing near heat sources, radiators, or cold drafts, as temperature fluctuations can cause leaf drop and bud loss. USDA hardiness zone 11.

Aeschynanthus speciosus produces spectacular tubular flowers in terminal clusters of 4-20 blooms. Each curved flower measures 6-11 centimetres long with five rounded lobes. The colouration is striking: yellowish-orange at the base transitioning to reddish-orange near the mouth, with dark maroon interior markings and a yellow-streaked throat. Individual flowers persist 2-3 days. The developing buds emerging from calyces resemble lipstick tubes, giving rise to the common name.

Propagate Aeschynanthus speciosus through stem cuttings taken year-round. Cut 10-15 centimetre sections below a leaf node, remove lower leaves, and place up to three cuttings in loose, well-draining substrate. Cover with a plastic bag to maintain high humidity, keep at approximately 23°C, and maintain slightly moist soil. When new shoots appear, roots have developed. For fuller plants, group 7-10 rooted cuttings per container. Leaf cuttings are possible but slower.

Prune Aeschynanthus speciosus in spring after flowering. Since flowers emerge from stem tips, excessive trimming during the growing season can reduce blooming. If stems become overly long or bare, use sharp, clean tools and leave at least one-third of the stem length. Pruning encourages branching and results in a fuller plant. Remove completely dry, leafless vines at any time. Trimming trailing stems post-flowering prevents legginess.

Repot Aeschynanthus speciosus only in autumn or spring to avoid disturbing developing flower buds. Use a loose, slightly acidic substrate similar to orchid mix—equal parts all-purpose compost, expanded clay, and pine bark, or coarse peat with 30% perlite. Ensure containers have drainage holes. This plant tolerates being slightly rootbound and doesn't require frequent repotting—typically every 2-3 years or when roots emerge from drainage holes.

The most notable variety is Aeschynanthus speciosus 'Mona Lisa' with deep red flowers. A widely grown hybrid, A. ×splendidus (A. speciosus × A. parasiticus), is often mistakenly sold as pure A. speciosus but is distinctly different. A. speciosus has contributed to modern hybrids including 'Rigel' and 'Black Pagoda.' Compared to other Aeschynanthus species like A. radicans, there are fewer commercially named cultivars of A. speciosus specifically.

Aeschynanthus speciosus can grow outdoors only in tropical and subtropical climates (USDA zone 11-12) where temperatures stay above 16°C year-round. In suitable climates, grow in semi-shade protected from direct sun. It can be trained as a climber on fences, grown on mossy rock surfaces, or displayed in outdoor hanging baskets. In temperate climates, bring plants indoors before temperatures drop below 16°C or grow permanently as a houseplant.

During the active growing season (spring-summer), maintain regular watering, monthly half-strength fertilizer applications, and high humidity. In winter, reduce watering—allow the top few inches of soil to dry more thoroughly between waterings to mimic a dormancy period. Maintain minimum temperatures of 16°C and continue providing bright indirect light. Avoid repotting during winter. Resume regular feeding in spring when new growth appears.

In its native Southeast Asian habitat, Aeschynanthus speciosus is pollinated by birds, particularly after rainfall when the flowers are most attractive. The tubular flower shape and bright orange-red colouration are typical adaptations for bird pollination. Fruits develop as slender capsules 20-40 centimetres long containing small, hairy seeds that are wind-dispersed.

Yellow leaves on Aeschynanthus speciosus typically indicate watering problems. Overwatering and root rot are the most common causes—check if soil is soggy and roots are brown and mushy. Underwatering also causes yellowing, starting at the base of vines. Other causes include insufficient light, being severely rootbound, or nutrient deficiencies. Assess your watering schedule, check drainage, and ensure the plant receives adequate bright indirect light.

Brown leaves or leaf edges on Aeschynanthus speciosus usually indicate too much direct sunlight (sun scorch), low humidity, or underwatering. Placement near heat sources causes excessive moisture loss and browning edges. Salt buildup from fertilizer can also cause brown tips. Move the plant away from direct sun, increase humidity through misting or pebble trays, ensure adequate watering, and flush the soil periodically to remove salt buildup.

Drooping leaves on Aeschynanthus speciosus typically result from watering issues—either too much or too little. Check the soil: if dry, water thoroughly; if soggy, reduce watering and check for root rot. Cold drafts and excessive heat also cause drooping. Temperature stress from being too close to heating vents or cold windows affects leaf turgor. Ensure stable temperatures between 16-24°C and protect from drafts.

Leaf drop in Aeschynanthus speciosus commonly results from sudden environmental changes: temperature or moisture fluctuations, moving the plant, low humidity, waterlogging, poor drainage, or inadequate light. This species is particularly sensitive to being relocated. Address by maintaining consistent conditions, increasing humidity via misting or pebble trays, improving drainage, and positioning in a stable location with bright indirect light.

Slow growth in Aeschynanthus speciosus often indicates insufficient light—move to a brighter location with indirect light. Other causes include being rootbound (check if roots emerge from drainage holes), inadequate fertilization during the growing season, low temperatures, or insufficient humidity. This species naturally has a moderate growth rate, so some slowness is normal, especially in winter when growth naturally slows.

Aeschynanthus speciosus is susceptible to sucking insects including aphids, mealybugs, and spider mites, especially in dry indoor conditions. Root rot from overwatering is the most common disease. Regular misting helps prevent pest issues by increasing humidity. Inspect regularly and treat infestations promptly with insecticidal soap or neem oil. Prevent root rot by ensuring well-draining soil and allowing the top soil layer to dry between waterings.

Clean Aeschynanthus speciosus leaves by gently wiping with a damp cloth or misting with room-temperature water. The glossy, fleshy leaves can accumulate dust which reduces their ability to photosynthesize. Regular misting serves the dual purpose of cleaning leaves and maintaining the high humidity this species loves. Avoid using leaf shine products which can clog pores. Handle trailing stems carefully to avoid breakage.

Lipstick Vine’s native range is Tropical Asia.

Lipstick Vine should be watered regularly, allowing the soil to dry out between waterings.

Lipstick Vine loves a well-draining soil. Perlite and vermiculite help with drainage, while coco coir adds organic matter, so a good potting soil mix will have all three. You can improve store-bought soil by adding some perlite to it.

To ensure optimal growth, the Lipstick Vine prefers bright diffused light for 6-8 hours each day. Insufficient light can result in slow growth and leaf drop, so it's important to find a well-lit location for this plant. Place it near a window, within a distance of 1 meter (3 feet), to enhance its potential for thriving.

No additional humidity is required for the Lipstick Vine. Plants take in most of their water through their roots, not their leaves, therefore, watering the soil is the most effective way to supply humidity to your plants.

Repotting the Lipstick Vine is necessary either when it has doubled in size or once every year, whichever happens first. With fresh potting soil replenished annually, the plant will receive all the necessary nutrients, rendering the use of fertilizer unnecessary. Keep in mind that the source of a plant's energy is the sun, not fertilizer.

The toxicity level of this plant has not been officially confirmed by Ploi. If there is a possibility of ingestion of plant material with an uncertain toxicity by you, a family member, or a pet, it is advisable to seek the assistance of a medical professional.