Hoya mitrata 'Silver' Ø7cm

Hoya mitrata 'Silver' - A dramatic, slow-growing Bornean species with large, prehistoric-looking leaves covered in metallic silver splash. Forms distinctive concave leaf clusters that shelter ants in nature - a true myrmecophyte. Produces unusual crown-shaped flowers with white petals and red-centred corona, releasing a sweet, intoxicating fragrance. A sought-after rarity that rewards you with unforgettable foliage and blooms. Non-toxic to pets! Growth and development Growth habit is scrambling to climbing. Stems are relatively thick and sturdy compared to many Hoyas, producing clusters of leaves interspersed with normal paired foliage. This species is a slow grower - patience is required, and it operates on its own timeline. MyHoyas.com confirms the species is 'rather easy to grow, but it doesn't grow too fast so it's easy to keep on a smaller support.' Under cultivation, vines can eventually reach 1.5-2 metres with proper support. The plant is well-suited to mounting on cork or driftwood, training on a trellis or hoop, or growing in a hanging basket. Cuttings are slow to establish - they may take considerable time before producing new roots and shoots. Vermont Hoyas shares an illuminating experience: their cutting sat for nearly a year doing 'absolutely nothing' before suddenly producing peduncles and flowering. This is a plant that rewards patience. Care Requirements: Light: Bright, indirect light is ideal and enhances the silver colouration. The silver markings are most vibrant under good lighting conditions. Tolerates some direct morning or late afternoon sun, which can bring out bronze or burgundy sun-stress tones in the foliage - a desirable feature for many collectors. Avoid harsh midday sun, which may scorch the leaves. In low light, the silver contrast fades and growth slows significantly. Hoya Store Australia notes this species 'prefers bright indirect light' and 'loves heat.' Water: This is critical - Hoya mitrata is notably sensitive to overwatering. Vermont Hoyas learned through experience: 'every time I watered the plant, a leaf would yellow and fall off. I finally got the point that this plant does not want to be over watered.' Allow 70-80% of the substrate to dry between waterings, then water thoroughly and ensure complete drainage. The thick, fleshy leaves store moisture well and can handle dry periods far better than soggy roots. Reduce watering significantly in winter. When in doubt, underwater rather than overwater - this species handles drought far better than wet feet. Soil: Chunky, fast-draining, highly aerated substrate is essential - this is non-negotiable for Hoya mitrata. Tropics@Home specifically recommends orchid mix. A blend of orchid bark, perlite, pumice, and minimal natural matter provides excellent drainage and root aeration. Avoid dense, moisture-retentive soils. Some growers find success with semi-hydroponics (LECA) once the plant is established, as it provides consistent aeration. Vermont Hoyas found success using hydroton (expanded clay) with the reservoir eliminated to prevent soggy conditions. Temperature: 21-35°C is the ideal range - this is a warm-growing species that loves heat. Hoya Store Australia describes it as a 'warm hoya: best suited to warm temperatures between 21-35°C.' Avoid temperatures below 10°C, which can cause damage or dormancy. Protect from cold drafts and sudden temperature fluctuations. Consistent warmth encourages growth and supports flowering. Humidity: 60-80% humidity produces the best growth and most vibrant silver expression. This tropical species appreciates high humidity. However, good air circulation is essential - stagnant, humid conditions can invite fungal issues. Avoid direct misting of leaves; ambient humidity from a humidifier is preferable. Average household humidity (40-50%) is tolerated but may result in slower growth. Feeding: Light feeding only. Apply a balanced liquid fertilizer at half-strength monthly during the growing season (spring-summer). This is a slow grower that processes nutrients gradually - do not overfeed. Stop fertilizing in autumn and winter. Some growers use orchid fertilizer or a low-nitrogen formula to encourage flowering on mature plants. Botanical Info: Family: Apocynaceae (subfamily Asclepiadoideae) | Genus: Hoya | Species: Hoya mitrata Kerr (1940) | Form: 'Silver' (silver-splashed foliage selection from Borneo) | Synonyms: Hoya darwinii Loher (misapplied in some sources), Hoya wallichiana Decne. (rejected name) | Related Trade Names: Hoya sp. Buntok Silver, Hoya mitrata 'Silver Kapuas', Hoya mitrata 'Buntok Silver' | Common Names: Crown Hoya, Mitre Wax Plant | Type: Epiphytic/Lithophytic Climbing Vine (Myrmecophyte) | Native Range: Thailand, Malaysia, Indonesia (Borneo, Sumatra), New Guinea | Zone: USDA 10-12 (indoor cultivation in temperate climates) | Flowering: Reflexed, crown-shaped, ivory-white corolla with red-centred corona, up to 15-20 per umbel, gently sweet fragrance, autumn (on mature plan