Nematanthus species are perennials or subshrubs, typically growing epiphytically, less often in humus-filled pockets on rocks.

[6] Within the subtribe, it forms a clade with Codonanthe, Codonanthopsis and Lesia:[7][8] Lesia Codonanthopsis Codanthe Nematanthus As of April 2021[update], Plants of the World Online accepted the following species:[1] Nematanthus thrive at temperatures between 18 and 25 °C (64 and 77 °F), although they stay more compact if grown at 15 to 17 °C (59 to 63 °F).

[11] Nematanthus do best in bright indirect light,[9] and can easily burn in direct sunlight.

[10][12] The tuberous roots of this plant retain water, and Nematanthus prefer the soil to remain moist, and well-drained.

The leaves are 5 by 2.5 cm (2.0 by 1.0 in), glossy dark green with a reddish brown margin on the under surface.

Its leaves are slightly larger than those of 'Tropicana', 6 by 6 cm (2.4 by 2.4 in), lighter green on both sides and less glossy.

The flower is smaller, with a light green calyx and a striking orange-red perianth.

It is a compact cultivar, less sensitive to unfavorable growing conditions such as overwatering or bright light.

The leaf is smaller, 3.5 by 2 cm (1.4 by 0.8 in), and less tapered than that of other cultivars, and is thick, waxy and glossy.

The underside of the leaf is red with a green edge and is clearly visible as the leaves are somewhat upright.

Although 'Gietvoz' does not flower as readily as other cultivars, it has a good growth habit and attractive foliage.