Red Yucca is a desert dwelling cactus native to Texas and Northern Mexico.
It is favored by many people because it draws hummingbirds, and also because it requires very little care and water.
Getting Red Yuccas to flower can be challenging even if the plant is well established and robust in size.
What is Keeping My Red Yucca From Blooming?
Red Yuccas will often fail to bloom if they have too much water and the soil is too rich. The age of the plant and how long it has been growing in a location can also work against flowering.
Diagnose and Fix Problems that Prevent Red Yuccas From Flowering
Red Yuccas are like any other plant in the sense that they need nitrogen, phosphorus, and other nutrients to grow. Desert soil, however, tends to be very poor in nutrients.
What a Yucca Plant needs to be healthy in terms of leaves and what it needs to flower are two different things.
When there is plenty of nitrogen, phosphorus and potassium in the soil, Red Yucca plants will put all of their effort into making leaves.
If the nutrients are less dense, then the plant will make flowers.
Conduct a Soil Test
It can be very hard to determine if your soil has the right amount and blend of nutrients without a soil test kit.
Most test kits come with strips or reagents to test for the pH, nitrogen, potassium, and phosphorus.
Resolving Soil Challenges
Before you try to adjust the nutrients in the soil, take note of the way other plants affect the soil.
Plants like Wisteria, Kudzu, and other legumes will add more nitrogen to the soil.
If you don’t want to remove surrounding plants, you can try using sawdust or wood-based mulch to absorb some of the nitrogen.
Try to avoid products that have components rich in sulphur.
Contrary to popular belief, it is microbes consuming sulphur that make soil acidic as opposed to the addition of acidic materials.
Since desert soil tends towards a high pH, or alkaline, a reduction in pH may be counterproductive when it comes to encouraging Red Yucca plants to flower.
You may find it easier to relocate the plant instead of changing the soil chemistry.
If you do relocate the plant, make sure you create barriers to nutrient migration from nearby soil.
You can do this with a raised bed or otherstructure that keeps different kinds of soil separated without stopping drainage.
Red Yucca plants do best when they have full, bright sunlight. You may also need to pay attention to day length in relation to the lighting.
A light meter can help you take measurements and compare them to what the plant would be experiencing in its native environment.
All you have to do is monitor the day length in Chihuahuan Desert and the temperatures to see how that compares to where you are growing the plants.
If the plant isn’t getting enough light in relation to the temperature, you can try using grow lights.
Be sure to choose lights that have red spectrum arrays. These color bands increase flowering.
In an outdoor setting, be sure to measure the lighting in any location that might be suitable for the plant.
Use a Moisture Meter and Rain Gauge to Measure Water in the Soil
As with other cactus and succulent-type plants, Red Yucca plants do poorly when they have too much water.
The roots on Red Yucca plants will rot very quickly if exposed to soil that is too wet.
Before that happens, the plant may also produce a lot of leaves, but no flowers.
Start off with a rain gauge to find out how much water is falling on the soil naturally.
Compare this amount to the normal rainfall in the Chihuahuan Desert for the season when Red Yuccas are most inclined to make flower stalks.
If there is too much water, you can still take steps to improve drainage.
A moisture control meter can help you with this process. It can also help you avoid overwatering in the future.
If water collects naturally in the area, you can use drain tile or ditches to improve drainage. This may also mitigate excess rainfall.
To resolve water-related challenges, you may still need to relocate the plant. If the entire area tends to collect water, use a raised bed.
Put three to five inches of gravel in the bottom of the bed. Then use cactus or succulent soil on top of the gravel.
Red Yucca Plant Age and Flowering
Red Yucca plants will not flower until they are established for at least three years.
If the plants are younger, you should still pay attention to soil quality, lighting, and moisture levels.
A plant that is growing in the right conditions before maturity may be more inclined to bloom once it is time.
Older plants may also fail to bloom if they are overgrown. Once Red Yuccas start flowering, remove dead flowers and leaves as they crop up.
Trimming will help reduce the amount of organic matter that builds up in the soil. It will also stimulate the plant to make new growth.
Frequently asked questions about Red Yucca that is not blooming
How Often Should I Water Red Yucca Plants for Optimal Flowering?
Try to water the plants as little as possible, especially in the weeks and months prior to flower stalk development.
Is a Lack of Flowering a Sign that a Red Yucca Plant is Unhealthy?
As long as the leaves are healthy and strong, then there is a good chance the plant is healthy even if it isn’t making flowers.
Is There a Way to Force Young Red Yucca Plants to Bloom?
Red Yucca plants won’t flower until they are mature. There is no viable way to trick younger plants into blooming.
Red Yucca plants will usually produce plenty of leaves regardless of the soil conditions.
If you want the plants to flower, you will need to monitor the soil, moisture, and lighting conditions.
This is a rare plant in the sense that less water and poor soil increases the likelihood that it will bloom.
Marcel runs the place around here. He has a deep passion for houseplants & gardening and is constantly on the lookout for yet another special plant to add to his arsenal of houseplants, succulents & cacti.
Marcel is also the founder of Iseli International Commerce, a sole proprietorship company that publishes a variety of websites and online magazines.