How to Grow Phalaenopsis Orchids in Humid Regions? A Detailed Guide to Care Methods

If you want to grow moth orchids (Phalaenopsis) with lush foliage and a full flush of blooms in a humid region, you really need to learn the wet-growing method. But use it the wrong way, and you may end up killing the plant instead. Below, let's go over exactly how to do it, plus a few extremely important precautions.

1. Wet-growing methods

(1) The watering method

When watering a moth orchid, never just pour the water on all at once. You need to slowly pour the water in along the edge of the pot, and try not to touch the stem in the middle. Water 100 - 200ml each time, which is about half a bottle of mineral water. Remember, it's better to water too little than too much. There's also a key point: never pour water into the leaf center; if water collects there for a few days, it will rot. It's best to water by the "dry thoroughly, then water thoroughly" rule: water again only after the soil surface has dried, and repeat the cycle.

(2) The water-absorption method

Use sphagnum moss as the growing medium. Find a somewhat deep basin, fill it with water, and set the moth orchid, pot and all, into it. When you see the sphagnum moss has absorbed half the water, take it out right away, and let the rest be absorbed slowly on its own. Never let it soak all the way through: if the roots stay in water, they will surely rot within a few days, and by then you won't be able to save it at all!

(3) The pot-soaking method

If you notice the moth orchid's leaves have all gone limp and it's desperately thirsty, and the growing medium is something well-draining like bark, you can try pot-soaking. Find a container one size larger than the flower pot, fill it with water, with the water level the same height as the soil in the pot. Set the pot in to soak, and once the soil is completely saturated, take it out. Be careful not to let the leaves touch the water; after soaking, put it in a well-ventilated spot so the excess water evaporates quickly.

2. Conditions for wet growing

(1) Strong roots+good airflow

The biggest prerequisite for wet growing is that the moth orchid must have healthy roots. If the roots have already turned black and rotted, the wetter you keep it, the faster it dies. Also, don't use ordinary soil; sphagnum moss, bark chunks, and clay pebbles are recommended, since these breathable media are less likely to cause rot.

(2) Indirect light+ventilation

When growing moth orchids at home, don't put them on a balcony in full sun, and don't leave them stifling in a corner either! Find a spot with indirect light, such as by a living room window or on a north-facing balcony, which is quite good. Ventilation is also especially important: if the air doesn't circulate, water dries slowly, and bacteria easily come calling; black spots on the leaves and root rot all start this way.

(3) Temperature

If the temperature is below 15°C, don't wet-grow it. Moth orchids are cold-sensitive, and in a low-temperature environment, too much water easily causes cold damage. In winter, it's best to move them indoors; when the air conditioning or heating is on, don't place them too close, and keep the temperature at 15°C or above, so it can grow with peace of mind.

3. Everyday care

Besides watering, everyday care also involves quite a few small details. Check the leaves and roots once a week, and if you find black spots or rotten roots, deal with them right away. Don't fertilize too often; use a diluted nutrient solution and apply it once every two weeks, since strong fertilizer easily burns the roots. Also, pay extra attention when the seasons change, and adjust the watering frequency according to temperature and humidity; with careful care, moth orchids will bloom year after year.

Learn these methods, and even beginners can grow beautiful moth orchids!