Phalaenopsis amboinensis *fragrant

Phalaenopsis amboinensis is a botanical species described by J.J. Smith in 1911, native to Ambon, Sulawesi, Indonesia, and New Guinea. It grows epiphytically in humid forests at 0–400 m, beneath the canopy. It is a small plant suited to warm climates. The leaves are elliptical or oblong-lanceolate, reaching up to 25 cm. The flowers are fragrant.

Flowering is long-lasting. The arching lateral spikes can reach 45 cm and usually appear from late winter into spring. The flowers are 5–8 cm wide, last approximately 4 weeks, and have broad, cup-shaped petals and sepals on a cream-yellow or pale orange background, with reddish-brown lines. The labellum is small. Its fragrance is one of the reasons this species is highly sought after.

Light should be moderate, typical for Phalaenopsis: 10,000–12,000 lux, with morning sun or filtered light. Below 10 hours of light per day, growth slows. Warm temperatures are suitable, approximately 22–31°C, without prolonged cold nights. Gentle air circulation helps after watering.

Water when the roots turn silver and the substrate is nearly dry, then allow the water to drain completely. It prefers consistently moderate moisture, not a waterlogged pot. Water in the morning so the leaves and crown can dry by evening. Do not allow water to remain in the leaf axils. During active growth, fertilize with a diluted solution after watering, using orchid fertilizer. In winter, if light levels decrease, reduce watering and stop fertilizing.

Use an airy mix of medium-grade bark, optionally with a little sphagnum, perlite, or charcoal. A Phalaenopsis substrate is suitable if it dries at the right rate for your home. Repot every 2–3 years or when new roots appear, sooner if the substrate has deteriorated or the roots are damaged.

If the plant is not growing, check the light, warmth, and condition of the roots. Soft roots, a sour smell, or a soft base indicate excess water. Soft leaves may indicate thirst or roots that are no longer absorbing water. Buds may be affected by sudden moves, very dry air, or large temperature fluctuations.