Phalaenopsis gigantea * fragrant

Phalaenopsis gigantea is a botanical species native to northern Borneo (Sabah, Sarawak, Kalimantan), rare in its natural habitat and included in conservation programs. It is a large epiphyte suited to warm to very warm climates. The stems are short; the 5–6 leaves are pendulous, glossy, and elliptic to oblong-ovate, reaching 56–91 cm in nature. The flowers are strongly fragrant, with a sweet aroma.

It can bloom in any season, more frequently toward the end of summer and the beginning of autumn. The 15–40 cm flower spikes are pendulous, racemose, or paniculate, with many flowers that open almost simultaneously. The flowers are 3.8–7 cm across, star-shaped, and fleshy, ranging from greenish-white to yellow, with brown or chestnut-colored spotting. The labellum is white, with reddish-purple spots. If the spike remains green after flowering, it may rebloom over several seasons; cut only the dried parts.

Light should be moderate to low, approximately 8,000–10,000 lux. A bright location without strong direct sunlight is suitable. Warm temperatures are essential: around 28–32°C during the day and 21–24°C at night. It does not need a cool rest period; in winter, you can slightly reduce fertilization if light levels decrease, but do not force prolonged dryness.

Water with room-temperature water in the morning, when the substrate is nearly dry, and allow the excess to drain away. Moderate to high humidity is beneficial, but air circulation is essential: humidity above 75% without ventilation increases the risk of fungal problems. During active growth, fertilize with a diluted solution after watering, using orchid fertilizer.

The substrate should be airy and dry at a good rate: use coarser-grade bark, optionally mixed with sphagnum. A Phalaenopsis substrate works well as long as it does not remain waterlogged. Some plants do well with the pot slightly tilted so that water cannot collect at the base of the leaves. Repot when new roots appear, preferably outside the cold season, and avoid frequent handling: a large gigantea plant recovers slowly after being disturbed.

If the leaves become wrinkled, check the roots and watering frequency. Burn spots appear after exposure to direct sunlight. Lack of flowering in a still-small plant is normal: the species needs time and well-developed foliage before producing abundant flower spikes.