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You do not need to feed orchids when blooming, and in fact, feeding them during this time can actually do more harm than good.
It’s a common question among orchid lovers, and the short answer is that a blooming orchid is focused on flower production, not on growing new leaves or roots.
When you feed orchids while they are in full bloom, the extra fertilizer can cause the flowers to fade faster and may even trigger bud blast, where the buds drop off before they open.
In this post, we’ll break down exactly why you should hold off on feeding orchid plants during bloom, when you should resume fertilizing, and how to keep your orchid healthy throughout the flowering cycle.
Let’s dive in and clear up the feeding mystery once and for all.
Why You Should Not Feed Orchids When Blooming
Orchids are unique plants, and their nutritional needs change depending on the stage of their growth cycle.
Feeding orchids when blooming disrupts the natural rhythm that tells the plant to put all its energy into those gorgeous flowers.
Here’s why it’s best to skip the fertilizer during this phase.
1. Fertilizer Promotes Foliage Over Flowers
When you feed orchids, especially with a high-nitrogen fertilizer, you’re signaling the plant to grow leaves and roots.
That’s great during the vegetative stage, but during blooming, you want the opposite.
A blooming orchid doesn’t need new growth; it needs to sustain the flowers it’s already produced.
So, when you feed orchid plants during bloom, you might see more leaves sprouting, but you’ll likely notice the flowers wilting much faster than they should.
2. It Can Shorten the Blooming Period
Orchid flowers are delicate, and the plant has a finite amount of energy to keep them open.
If you feed orchids when blooming, you’re essentially forcing the plant to divide its resources between maintaining flowers and starting new growth.
This division of energy often results in flowers that drop prematurely.
Instead of enjoying weeks of stunning blooms, you might only get a few days before they start to fade.
3. Risk of Bud Blast
Bud blast is a heartbreaking issue where orchid buds turn yellow, shrivel, and fall off without ever opening.
While bud blast is often caused by sudden changes in temperature or humidity, feeding orchids during bloom can also be a trigger.
The salts in fertilizer can build up in the potting medium and stress the roots, which in turn stresses the plant.
If you feed orchid plants while they’re developing buds, you run a higher risk of losing those buds entirely.
4. Salt Buildup in the Potting Medium
Every time you feed orchids, the fertilizer leaves behind mineral salts in the bark or moss.
During blooming, orchids are already working hard, and their roots are more sensitive to salt buildup.
Too much salt can burn the roots, making it harder for the plant to take up water and nutrients.
This root damage can have long-lasting effects, even after the blooming period is over.
So, feeding orchids when blooming isn’t just unnecessary; it’s actively risky for the plant’s health.
When Should You Feed Orchid Plants?
Knowing when to feed orchids is just as important as knowing when to stop.
The best time to fertilize your orchid is during the active growing season, which is typically spring and summer.
Here are the key windows for feeding your orchid plants.
1. During New Leaf and Root Growth
Once the flowers have fallen off and you see new leaves pushing out or fresh roots emerging, that’s your signal to start feeding orchids again.
This is the vegetative phase when the plant is actively building up energy reserves.
A balanced fertilizer, like a 20-20-20, diluted to half strength, works perfectly here.
2. After the Bloom Cycle Ends
When the last flower drops, you can cut the spike back and begin a regular feeding schedule.
Feed your orchid every other week with a diluted fertilizer to support the recovery process.
This helps the plant rebuild its strength so it can produce even more impressive blooms next time.
3. During the Reblooming Prep Phase
Some growers use a phosphorus-rich fertilizer, like a 10-30-20, to encourage reblooming.
But this should only be done when you see a new spike emerging, and even then, go very light.
Once the buds have formed, stop feeding orchids entirely until the blooms are done.
How to Care for a Blooming Orchid Without Feeding
Just because you don’t feed orchids when blooming doesn’t mean you can’t care for them properly.
Here’s what you should do instead to keep those flowers thriving.
1. Focus on Proper Watering
Water your orchid thoroughly when the potting medium feels dry to the touch.
For most orchids, this means watering once a week, but it depends on your home’s humidity and temperature.
Make sure the pot has good drainage so the roots never sit in standing water.
2. Provide Bright, Indirect Light
A blooming orchid loves bright, indirect sunlight, like from an east-facing window.
Too much direct sun can scorch the leaves and cause flowers to fade quickly.
If you’re not sure, feel the leaves; they should be cool to the touch, not warm.
3. Maintain Stable Humidity and Temperature
Orchids thrive in humidity levels between 50% and 70%.
You can increase humidity by placing a tray of water with pebbles under the pot.
Avoid placing your orchid near drafts, heaters, or air conditioning vents, as sudden temperature shifts can cause bud blast.
4. Keep the Potting Medium Airy
Be sure the bark or moss isn’t breaking down and becoming compacted.
Compact medium suffocates the roots and holds too much water, which can lead to rot.
A breathable medium helps your orchid breathe and helps you skip the need to feed orchids during bloom.
So, Do You Feed Orchids When Blooming?
No, you do not feed orchids when blooming, and skipping the fertilizer will give you healthier plants and longer-lasting flowers.
Feeding orchids during bloom can shorten the flower life, cause bud blast, and lead to root damage from salt buildup.
Instead, wait until the bloom cycle ends and new growth appears before you resume fertilizing.
By being patient and holding off on feeding orchid plants while they bloom, you’ll be rewarded with vibrant, long-lasting flowers that make all the effort worthwhile.
So, the next time you see those buds forming, remember to put the fertilizer away and just enjoy the show.
Your orchid will thank you for it with a stunning display that lasts for weeks on end.