* Some moth orchids are grown in peat-type or sphagnum moss mixes.
These tend to dry out more slowly than bark mixes and may not need
to be watered as often.
* Orchids in fine bark will hold more
moisture compared to those in medium or coarse bark.
How to Water your
Moth orchids are epiphytic--they grow on
other trees, with roots clinging to the bark and exposed. Most hobbyists grow
phalaenopsis in pots since its far more convenient. Moth orchids receive frequent
rainfall during their growing season--the roots are wet thoroughly, but dry out a
bit, before they are wet again.
In pots, orchids roots are
exposed to less air and do not dry as quickly. If you overwater them, the
roots end up rotting and the plant will not
orchids also need to be kept moist since they have no pseudobulbs to store water
unlike many other types of orchids. Allow them to dry out very
slightly before watering again. Never let phals get bone-dry. As with all
orchids, water plants thoroughly early in the day, so that the leaves are dry by
nightfall. It is especially important not to let water sit in the crown of the
plant (where the leaves emerge) as phalaenopsis are susceptible to crown rot.
Filtered tap water, or rain water, is best. Water should be tepid, not cold, i.e.
above 60 degrees. Flush the growing mix thoroughly and copiously with a gentle
stream, or spray, of water and then allow the pot to drain. Most of the
excess will drain out from the bottom of the pot. This is important to i) make
sure all the roots are wet, and to flush out excess salts from the growing
Your watering schedules will vary
considerably depending on light and temperature conditions. Plants may dry
out rapidly in warm dry conditions, needing water every few days, or may
remain moist in cooler seasons for longer periods of time. Water your moth
orchid according to its need, not your
Plastic pots retain more water than
clay pots. Larger pots dry out more slowly than smaller ones. And some orchid
potting mixes retain more water than others. Keep this in mind as well--moth
orchid plants in different size pots and/or mixes will not all need
watering on the same schedule.
Next, you will learn how to water your