Reasons Why Tuberose Won't Bloom and How to Fix It: Avoid Over-Fertilizing
Tuberose blooms at night, with pure white flowers and a rich fragrance, giving it ornamental value, and it is grown in many gardeners' homes. However, while growing tuberose, quite a few gardeners run into a headache of a problem: it won't bloom! So what should you do if your tuberose won't bloom? Here, the editor has found 4 reasons. Let's take a look together.
1. If Tuberose Won't Bloom, Find the Cause

Tuberose's fragrance is extremely intense at night and has a mosquito-repelling effect, which is why so many people love it. But this is all in the case of tuberose blooming. What if your tuberose won't bloom? According to the editor's research, there are 4 reasons tuberose won't bloom: the plant isn't old enough, the bulbs are dug too early, the tubers are too small, and over-fertilizing. For the specific solutions, let's read on.
2. Reasons Why Tuberose Won't Bloom and How to Fix Them
1. The plant isn't old enough
For tuberose to bloom, its tubers must grow to at least 2.2cm in diameter, as only then can flower buds form inside and produce blooms. If the tuberose you plant has small tubers, less than 2cm, then because it hasn't reached flowering age, the tuberose naturally won't bloom.
Solution: If it's a large bulb, plant it shallowly when planting so that the entire growing tip is exposed above the soil, which encourages the large bulb to bloom; if it's a small bulb, plant it deeply, covering with soil so that only the tip of the young shoot is exposed.
2. Digging the bulbs too early
Another possible reason tuberose won't bloom is that you dug up the bulbs at the wrong time, in short, digging the bulbs too early! The reason is that digging the bulbs too early affects the formation of flower buds inside the tubers, causing them not to bloom the following year.
Solution: As long as there's no risk of frost damage, you should dig the bulbs as late as possible. This is one of the ways to increase the blooming rate of tuberose.
3. Dampness and frost damage
If tuberose tubers are stored improperly in winter and become damp or frozen, the main flower bud inside the tuber will suffer frost damage or rot, so when planted the following year, the tuberose naturally cannot bloom.
Solution: If you want your tuberose to bloom at this point, you should dry the tuber skins thoroughly in the sun and then store them in a dry, warm place. Besides preventing the main flower bud from molding and rotting, you should also plant early and harvest as late as possible.
4. Over-fertilizing
In addition to the points above, over-fertilizing is also a reason tuberose won't bloom. Especially if too much nitrogen fertilizer is used, it causes excessive vegetative growth, that is, leggy stems and leaves, which suppresses flower bud growth and leads to few or even no flowers.
Solution: During tuberose's growing period, you should strictly control the fertilizer concentration, especially the amount of nitrogen fertilizer. This is an important measure to prevent tuberose from failing to bloom. Generally, apply once 1 month after planting, once before blooming, and after that once every 1.5 or 2 months.
What to Do If Tuberose Won't Bloom: Reasons and Solutions for Tuberose Not Blooming
Tuberose has ornamental value, and its pure white flowers and rich fragrance make it very popular. What should you do if your tuberose won't bloom? Below, let's talk about the reasons tuberose won't bloom and the solutions.
1. Improper storage
If tuberose tubers are stored improperly in winter and become damp or frozen, the main flower bud inside the tuber will suffer frost damage or rot, so planting the following year also won't produce blooms. Although there are secondary flower buds inside the tuber, the growing period is too short, and before they can emerge, the frost season has already arrived. Therefore, if you want your tuberose to bloom, you should dry the tuber skins thoroughly in the sun and then store them in a dry, warm place. Besides preventing the main flower bud from molding and rotting, you should also plant early and harvest as late as possible.
2. Digging the bulbs too early
Digging the bulbs too early is also a reason tuberose won't bloom, because digging the bulbs too early affects the formation of flower buds inside the tubers, causing them not to bloom the following year. Therefore, as long as there's no risk of frost damage, dig the bulbs as late as possible. This is one of the measures to increase the blooming rate of tuberose.
3. Planting tubers that are too small
Generally, tuberose tubers must grow to at least 2.2cm in diameter before flower buds can form inside and produce blooms. If the tuberose you plant has small tubers, less than 2cm, it hasn't reached flowering age and won't bloom either. So when planting, to encourage large bulbs to bloom, plant shallowly so that the entire growing tip is exposed above the soil; to encourage small bulbs to grow larger, plant deeply, covering with soil so that only the tip of the young shoot is exposed.
4. Over-fertilizing
Another main reason tuberose only grows leaves without blooming is excessive fertilizer and water, especially too much nitrogen fertilizer, which leads to excessive vegetative growth, that is, leggy stems and leaves, which suppresses flower bud growth and leads to few or even no flowers. Therefore, during the plant's vegetative growth period, you should strictly control the fertilizer concentration, especially the amount of nitrogen fertilizer. This is an important technical measure to prevent tuberose from only growing leaves without blooming.
An Analysis of the Reasons Tuberose Won't Bloom
Tuberose is what we commonly call "night-blooming jasmine"; because tuberose has very high ornamental value and its habit of blooming at night is deeply loved by gardeners, many friends often run into the situation where tuberose won't bloom while growing it. So exactly what causes tuberose not to bloom? And how should it be handled?
Tuberose
1. Improper storage
If tuberose tubers are stored improperly in winter and become damp or frozen, the main flower bud inside the tuber will suffer frost damage or rot, so planting the following year also won't produce blooms. Although there are secondary flower buds inside the tuber, the growing period is too short, and before they can emerge, the frost season has already arrived. Therefore, if you want your tuberose to bloom, you should dry the tuber skins thoroughly in the sun and then store them in a dry, warm place. Besides preventing the main flower bud from molding and rotting, you should also plant early and harvest as late as possible.
2. Digging the bulbs too early
Digging the bulbs too early is also a reason tuberose won't bloom, because digging the bulbs too early affects the formation of flower buds inside the tubers, causing them not to bloom the following year. Therefore, as long as there's no risk of frost damage, dig the bulbs as late as possible. This is one of the measures to increase the blooming rate of tuberose.
3. Planting tubers that are too small
Generally, tuberose tubers must grow to at least 2.2cm in diameter before flower buds can form inside and produce blooms. If the tuberose you plant has small tubers, less than 2cm, it hasn't reached flowering age and won't bloom either. So when planting, to encourage large bulbs to bloom, plant shallowly so that the entire growing tip is exposed above the soil; to encourage small bulbs to grow larger, plant deeply, covering with soil so that only the tip of the young shoot is exposed.
4. Over-fertilizing
Another main reason tuberose only grows leaves without blooming is excessive fertilizer and water, especially too much nitrogen fertilizer, which leads to excessive vegetative growth, that is, leggy stems and leaves, which suppresses flower bud growth and leads to few or even no flowers. Therefore, during the plant's vegetative growth period, you should strictly control the fertilizer concentration, especially the amount of nitrogen fertilizer. This is an important technical measure to prevent tuberose from only growing leaves without blooming.