Maxillaria Sophronitis (Ornithidium Sophronitis) is a remarkable and spectacular botanical species, yet still enigmatic for growers. Although extremely easy to grow as it readily produces new growths under normal apartment conditions, flowering is often sporadic and limited to isolated flowers appearing at irregular intervals.
From what is known so far, it seems that it prefers humidity and a cooler climate compared to other species of the Maxillaria genus. Many enthusiasts prefer mounting the species on bark or cork plaques and growing it as dense "beds" of specimens of considerable size, kept at low temperatures and strong light.
Native to northern Venezuela, Maxillaria Sophronitis is found in moist mountain forests or at their edges, at altitudes of 760 - 1520 m, mainly along mountain ranges near the sea, but also inland away from beaches.
Maxillaria Sophronitis was first described by Leslie Andrew Garay in 1958.
A small-sized, even miniature taxon, forming compact masses of rhizomes and pseudobulbs, Maxillaria Sophronitis prefers cool to warm climates. With a height of up to 3.2 cm, rhizomes wrapped in brown sheaths bearing ovoid, compressed pseudobulbs, pale brown in color, 1.2 cm long, with 1 or 2 leaves arranged basally, and a single leaf inserted apically, about 2 cm long, leathery, oblong-elliptical, slightly apiculate. Flowers appear in autumn and early winter on 4 cm long basal stalks, on mature, unifoliate pseudobulbs, bearing solitary flowers; they measure 2.5 cm in diameter and can persist for 4 - 6 weeks. They display an impressive color palette, with a reddish-orange background on the perianth petals and a yellow-orange labellum, whose marginal areas are yellow-cream. The outer petals, broad and pointed, open wide, while the inner ones, relatively shorter and tapered at the tip, incline forward, framing a pale green column with white anthers.
Recommended light radiation level for this species is 18000 - 25000 lux, combined with the need to ensure efficient ventilation.
Growth temperature will be moderate, with daytime summer values of 24 - 25 ℃ and minimums of 14 - 16 ℃. In the winter season, temperatures of 26 - 27 ℃ during the day and minimums of 12 ℃ at night will be maintained.
Humidity required for efficient growth of the species is about 75 - 80% for almost the entire year, except for the period between late winter and early spring, when it needs to be reduced to 60 - 65%.
The easiest way to grow this species is by mounting it on trunks or bark or cork plaques, which favors the typical rapid propagation of this taxon, but this cultivation method requires frequent watering, at least once a day during summer. When grown in pots, baskets or pots with abundant perforations are preferred, filled with substrate that drains well and is loosely compacted, such as coconut fiber, fine pine bark, possibly mixed with perlite or pumice. Changing the substrate, the growing container, and dividing can be done as soon as new growth appears.
Watering will be abundant during the active growth period but will be gradually and significantly reduced as autumn begins.
Fertilization will be done weekly at concentrations of 25 - 50% of the recommended dose, using a fertilizer with a high nitrogen concentration from spring until mid-summer, then replaced with one rich in phosphorus from the second half of summer until autumn.
The resting period will be ensured in winter, when watering will be reduced, but without allowing the substrate to dry out completely; fertilization will also be reduced, possibly even stopped, until returning to the current watering schedule.
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