Alliums are some of the easiest and low-maintenance plants you’ll find.
When they bloom, they boast showy balls of tiny flowers.
They are eye-catching, and they are a great way to add a pop of color to your flowerbeds.
Did you know the alliums are a part of the onion family? Crush a leaf or cut a stem off of your plant, and you’ll get the familiar scent wafting to your nostrils.
The good news is that it’s rare for deer, squirrels, and voles to go after alliums.
They tend not to enjoy the onion scent and flavor.
The majority of alliums are perennials.
This means that they will grow back for you year after year.
But what happens if your alliums grow back, and don’t bloom for you? The good news is that you don’t need to dig them up.
There are some straightforward explanations as to why alliums may not be blooming.
We’ve gathered some of the top explanations, so you can ensure your alliums bloom again.
Determining Why Alliums Failed To Bloom
1. How Deep Did You Plant The Bulbs?
Alliums can be planted at any point during the growing season.
The size of the bulb should determine the planting depth.
Smaller bulbs should be planted no deeper than 3”.
Larger bulbs should be planted no deeper than 6” deep.
If your bulbs have been planted too deep, they will need extra time to grow and break through the surface.
This can lead to a delay in blooming, and the plants may even miss their time for blooming.
You could dig them up and transplant them so that they have less work to do when the growing season rolls around again.
The bulbs are hardy and will be able to withstand the stress of transplanting.
It is important to note that planting the bulbs too shallow can also have an impact on how they bloom.
Bulbs are easy to dig up and transplant. They can be moved to a better depth or even to containers.
2. Did You Check The Growing Region?
Alliums are very hardy, but the bulbs you selected may not be hardy enough for your growing region.
Double check that your particular bulbs are suited for your growing region.
If they are not, then you may need to dig them up and plant them inside of containers.
The containers can be relocated to a shed, garage, or greenhouse during the coldest months of the year.
While it can be frustrating to realize that your bulbs were not well-suited for your growing region, all is not lost.
The bulbs can be relocated to containers, so they can get the winter protection that they need.
3. Is There Too Much Moisture?
It’s all too easy to overwater your alliums.
It’s also too easy to set them in soil that’s not well-draining.
This can result in rot to the roots, bulb, and stems of the plant.
A plant that is in distress won’t bloom. It will instead focus on survival.
This could mean directing all of its energy into preserving the bulb and the roots.
Check to see how damp the soil is. If it’s soggy, it may be time to ease back on the watering frequency. It may also be a good idea to add rocks and sandy soil to help foster good drainage.
Just as it’s easy to overwater, it’s easy to under-water. This is an easy fix you’ll be able to implement simply by watering more frequently.
4. Considering The Sunshine
Alliums are hardy plants that can adapt to many growing conditions.
They do, however, need at least partial sunshine. They do best in full sunshine.
If your alliums are not getting sufficient sunshine, then they just may not bloom.
The plants won’t be getting what they need to enable them to bloom.
Transplanting the bulbs to a sunnier location is the best solution. You may not see blooms this year, but you are sure to next year.
Simply relocating your alliums to a sunshine-filled area will produce big bloom results. This is a simple fix you can do any time during the growing season.
5. Are There Parasites Or Other Pathogens?
If there are signs of parasites or other infections on the plants, you may have your answers as to why the alliums didn’t bloom.
An unhealthy plant is not a plant that is going to bloom.
Examine the plant for any signs of infection or rot.
Unfortunately, the best solution for serious infections and parasite infections is to remove the bulbs and plants in their entirety.
This will ensure that the infection is not allowed to spread to your other healthy plants.
While it’s never good to lose your plants, it can help to prevent any infections from taking over your other healthier plants.
The sooner you get ahead of an infection, the better you’ll be able to offer protection to your other plants.
What Is The Best Solution?
There is no one true solution for getting your alliums to bloom again.
You will need to examine the soil and the health of the plants.
This will help you to diagnose the concerns with the plants better.
Keep the soil healthy and aerated. Ensure that it’s not overwatered.
Plant the bulbs correctly and keep them in the sunshine.