Why Your Hydrangeas Aren't Blooming - Backyard Boss
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Why Your Hydrangeas Aren’t Blooming

The hydrangea is a beautiful flowering shrub that can add a lot of curb appeal to your home. Although hydrangeas are popular plants, a lot of people don’t realize just how tricky they can be. If your hydrangeas aren’t blooming, it can be very frustrating! There are a few reasons why this might happen, so let’s take a look at some of the most common causes.

Sunlight For Your Hydrangeas

Large pink, purple and blue flowers, hydrangeas
Image credits: Hans via Pixabay

One reason why your hydrangeas might not be blooming is that they’re not getting enough sunlight. As a general rule, your hydrangea shrubs need at least 3 to 4 hours of sunlight per day in order to bloom properly. If your hydrangeas are in a shady spot, they may not bloom as much as you’d like them to.

Having said that, different types of hydrangeas have different sunlight requirements. For example, hydrangeas that are native to North America generally prefer shady conditions, while those from warmer climates often need more sun.

In general, hydrangeas that have large flowers (macrophylla) need more sun than those with smaller, oak-shaped flowers (oakleaf). The amount of sun also affects the color of macrophylla hydrangeas – more sun will result in brighter blooms, while less sun will produce softer hues. Please note, however, that you will need to water your hydrangea shrub more frequently if it is in the direct afternoon sun.

So, if you’re looking for a hydrangea that will do well in full sun or partial shade, oakleaf is a good choice. And if you want a hydrangea with large, bright flowers, macrophylla is the way to go. But no matter what type of hydrangea you choose, be sure to give it the right amount of sunlight for best results.

Pruning Your Hydrangeas

Image credit: JudiParkinson via canva

If your hydrangeas aren’t blooming, it may be due to pruning.

The best time to prune hydrangeas is actually in late winter or early spring before they start to put out new growth. This way, you can get rid of any damaged or diseased stems, and also shape the plant how you want it to look for the coming season.

When pruning hydrangeas, you want to cut back the stems by about one-third. This may seem like a lot, but don’t worry – hydrangeas are very resilient and will quickly bounce back. Just be sure to use sharp, clean pruning shears to make clean cuts.

One important thing to keep in mind when pruning hydrangeas is that each stem has two different types of buds: old wood buds and new wood buds.

Old wood buds are located on stems that grew the year before. While new wood buds are found on stems that grew the current year. You want to make sure that you don’t accidentally remove all of the new wood buds, as these are the stems that will produce flowers. A good rule of thumb is to prune back to a pair of old wood buds for each stem.

So, if your hydrangeas didn’t bloom this year, check to see if they were pruned too early.

The Right Soil For Your Hydrangeas

woman gardener transplanting hydrangea
Image credit: Mariia Boiko via shutterstock

Did you know that the type of soil your hydrangeas are in can affect their blooming? That’s right – hydrangeas are picky when it comes to dirt!

One reason for non-blooming hydrangeas could be because the soil is too rich in nitrogen. When the soil is too abundant with nitrogen, it can actually increase green growth but inhibit blooming. So, if you’ve been fertilizing your hydrangeas excessively, that could be the problem. Try cutting back on fertilizer and see if that makes a difference.

Also, depending on the variety of hydrangea, they prefer either acidic or alkaline soil. Soil that is too far on either end of the pH spectrum can cause hydrangeas to produce fewer blooms.

The ideal pH range for hydrangeas is between 5.5 and 6.5 – which is slightly acidic. If your soil is too alkaline, you can lower the pH by adding some sulfur to the soil. Conversely, if your soil is too acidic, you can raise the pH by adding some lime to the soil.

It’s also important to make sure that your hydrangeas are getting enough moisture. Hydrangeas like their soil to be moist, but not soggy. Water your hydrangeas regularly, and make sure that the soil has good drainage. If the roots of your hydrangea are sitting in water, they will rot and the plant will die.

Call In the Professionals

deep blue hydrangea
Image credits: Pexels via Pixabay

If your hydrangeas still aren’t blooming after trying these tips, then it’s time to consult with a professional. A certified arborist or landscaper will be able to diagnose the problem and come up with a solution that will get your hydrangeas blooming beautifully in no time!

In Summary

Have you ever grown hydrangeas? If so, did you have any trouble getting them to bloom? Hydrangeas can be tricky plants, but with a little bit of know-how, you can get them to bloom like crazy. In this post, we’ve outlined the most common causes of blooming problems in hydrangeas and provided some tips on how to fix them. Do you have any tips or tricks that have worked for you? Let us know in the comments below!