Arachnis is derived from the greek arachne meaning spider.
This is from the superficial resemblance of flowers of the members of this genus to a spider. Three species are reported from Malaysia namely Arachnis flosaeris, Arachnis hookerana and Arachnis maingayi. All three have been used as parents of Hybrids, especially Aranda hybrids.
Most Arachnis hybrids are very hardy if kept under full sun conditions. They may be grown in pots of brick and charcoal or planted in beds of soil with mulching and staked to keep them upright. Propogation is by stem cuttings.
The cultivars can be grown both as open cultivation or as intercrop under the coconut or can be grown under 30 % shade net house or under the style as shown in the pictures below. We use a mixture of coconut husk and wood shavings as the growing media . The plants are grown from the ground as the plants can reach a height of 2-3 meters in full bloom production. Organic additive blends are used in the potting mixture to avoid root rot and other problems. A mixture of neem cake and karanja cake blends are useful. Plants that can be chosen for this regime which can be in partial sun or total sun or as intercrop systems- include Arachnis all cultivars, Arantheras, Renentheras, Renenthopsis, Arandas and Mokaras.
Most of these families are large specimens growing to heights of 10 ft and above and they need support all the way to the top. Flowers occur almost at every leaf node axils in opposite and flowers usually are above 3 ft in length.
Most of them like full exposure to sun to get prolific flowering and can withstand severe stress conditions. A good bath of organics once in a week helps them maintain their vigour.
Some of the well known hybrids in the archnis segment include Arachnis Maggei Oei- red ribbbon and yellow ribbon, Aranthera Mohd.Haneef, Aranthera Bertha Braga, Arachnis Isabel, Aranthera Kappama,Arantherea James storiei, Aranthera 'Beatrice Ng', Aranthera Anne Black, Aranthera Ladda Gem etc.
Even after 25 to 30 years they still are good orchids for the cutflower trade as some of them have good shelf life and long spikes and really dark colors.
Normally Blooming plants age from 12 month to 18 month or can be more based on the plant type. A blooming plant is a show piece by itself and can be used to decor gardens, patios, receptions or office or hospitality industry needs and they serve to live more longer in interior environments. Most classic example is the once used in airports, lounges and hotel lobbies.