Reasons Why Phalaenopsis Orchid Buds Won't Open and How to Fix Them

When you grow Phalaenopsis orchids (moth orchids), have you ever run into that frustrating situation where you are eagerly waiting for them to bloom, only for the buds to drop one after another before they even open? Don't worry. Today we are going to explain the reasons behind this, along with some super practical solutions, so even complete beginners can handle it with ease and let their Phalaenopsis orchids bloom beautifully!

Sudden Environmental Changes

If your Phalaenopsis orchid starts dropping buds right after you bring it home, it is very likely due to too great a change in environment. When temperature, humidity and light all change at once, the orchid cannot adapt. For example, going from a warm, humid flower market to a dry, cold home environment.

Solution: For a newly purchased Phalaenopsis orchid, first find a spot with bright light but no direct sunlight, and keep the temperature at 18 - 25°C and the humidity at 50% - 70% . You can place a hygrometer nearby, and when it is dry, mist the surrounding area with a spray bottle to raise the humidity, letting it slowly adapt to the new environment.

Improper Watering

If you water too much, the roots sit in water and easily rot, so they cannot absorb nutrients and the buds drop; if you water too little, the plant lacks water and the buds will also drop.

Solution: Follow the principle of "water when dry, stop when wet". Insert your finger 2 - 3cm into the soil, and water again when it feels dry. Water thoroughly, until water runs out of the bottom of the pot. You can also weigh the pot in your hand; when it feels lighter, it is time to water.

Insufficient Nutrients

Phalaenopsis orchids need a lot of nutrients to bloom. If the nutrients in the soil are insufficient, the buds will drop due to a lack of nutrients.

Solution: Before the flowering period, give your Phalaenopsis orchid a phosphorus and potassium fertilizer, such as monopotassium phosphate, diluted 1000 - 1500times, and spray the leaves or drench the roots once every 10 - 15days to give it plenty of energy.

Pests and Diseases

Pests such as spider mites and aphids, as well as diseases such as anthracnose and soft rot, can all affect the health of Phalaenopsis orchids and cause the buds to drop.

Solution: Check the plant regularly. If you find pests, dilute Huahuashen (a pesticide) and spray it; if there is disease, promptly cut off the diseased leaves and dilute carbendazim or thiophanate-methyl and spray it for prevention and control.

Growing Phalaenopsis orchids is a process of slowly figuring things out and caring for them attentively. As long as you master these little tips and solve the problem of bud drop, getting your Phalaenopsis orchid to bloom in a full, abundant display is not just a dream!