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epiphyte78

Mounting Orchids Outdoors in Southern California

epiphyte78
16 years ago

Growing orchids epiphytically in Southern California is a challenging yet potentially rewarding endeavor. One of the biggest challenges is selecting the right orchid.

The Southern California Horticultural Society publishes an excellent booklet (Outdoor Growing Orchids for the Greater Los Angeles Area) that lists over 250 orchids that can be grown in our area without requiring a greenhouse. Where can you find these orchids? Trader Joes offers orchids at surprisingly low prices (when compared to local nurseries)... some of which are more or less hardy (Odontoglossums and Oncidiums). By far the best place for hardy epiphytic orchids is the Santa Barbara Orchid Estate.

Some of my personal favorites are Laelia anceps, Laelia albida and Schomburgkia superbiens

Other challenges to mounting orchids epiphytically include...

Insufficient Moisture - Our desert climate has low humidity with infrequent rain fall

Light - Prolonged exposure to direct sunlight will burn leaves. Insufficient light will discourage growth and flowering.

Low Temperatures - Freezing temperatures will kill most epiphytic orchids

Pests - Slugs, snails, rats, mice and squirrels will be more than happy to supplement their diet with your orchids.

Mounting the orchid - If the orchid is not securely fastened to the branch any movement can potentially damage new roots.

Possible solutions...

Insufficient Moisture - Highly textured bark provides more surface area and is better at retaining moisture. Adding Sphagnum moss also helps to retain moisture. Frequent watering/misting will also help... daily during the hottest days of summer down to twice a week during winter.

Light - Most hardy epiphytic orchids can handle a few hours of direct sun during the early morning and late evening hours but the rest of the time they prefer filtered/indirect bright light. Shade cloth is helpful in providing overhead protection for your orchids.

Low Temperatures - Check weather forecast for freezing temperatures and cover orchids with cloth if necessary.

Pests - Using wires to suspend a branch will help prevent pests from gaining access to the orchids.

Mounting the orchid - There are numerous ways to securely fasten an orchid to a mount. The technique I've found most effective is ordinary string with a bowline on one end which allows tightening the string around the orchid and branch without losing tension.

As you can see... the challenges are not insignificant. But the greater the challenges the greater the rewards. If you live in the Los Angeles area I offer free on-site consultation and instruction on mounting hardy epiphytic orchids (323-382-2914). Also, if anybody has any success stories I'd love to hear them so please post them in this thread.

Cheers,

Carlos

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