Why Hydrangeas Don’t Flower

Why does my hydrangea not flower? This most commonly asked question about hydrangeas, especially in colder climates. The answer is not always a simple one but I’ll try to answer the question in this post.

Reasons for not flowering depend very much on the type of hydrangea you are growing. It is therefore important that you know the type. Have a look at Hydrangea Identification to find out which type you have.

Hydrangea paniculata 'limelight', If you select the right hydrangea it will flower reliably, by Robert Pavlis
Hydrangea paniculata ‘limelight’, If you select the right hydrangea it will flower reliably, by Robert Pavlis

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Hydrangea Myths

Hydrangeas are very popular shrubs for the garden, but they can be a bit tricky to grow if you listen to all of the hydrangea myths on the internet and in books. In this blog, I will look at the truth behind some of the more common hydrangea myths. Once you have the facts, you will find that hydrangeas are easy to grow.

Hydrangea myths, is it blue or pink?
Hydrangea myths, is it blue or pink?

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Hydrangea Identification

Are you wondering why your hydrangea is not flowering? Would you like to know when and how to prune your hydrangea? These are important questions, but no one can provide the correct answers until you know what type of hydrangea you have. This post will help with your hydrangea identification. It won’t provide cultivar names but it will identify the type of hydrangea.

It is always a good idea to keep plant names since it makes it so much easier to find the correct cultural information at a later date. But life happens and it is quite common for people to lose the name of a plant.

Hydrangea macrophylla blue bigleaf hydrangea, Hydrangea Identification
Hydrangea macrophylla also called the bigleaf hydrangea

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Planting Trees the Right Way

Planting trees seems like such a simple thing to do, but most of the trees I see have not been planted correctly. A couple of years ago I was teaching a course on trees and wanted a picture showing the right way to plant a tree. I could not find one with Google, which illustrates the lack of understanding among gardeners and professionals.

Most advice on planting trees is wrong.

Everything in the post applies to both trees and shrubs – shrubs are just short trees.

Planting Trees the Right Way by Robert Pavlis
Planting Trees the Right Way, by Robert Pavlis

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Repotting Orchids

Repotting orchids is critical to maintaining and flowering them but this needs to be done differently than other house plants. Once you accept the fact that orchids are different, then the care of orchids becomes simple. Regular orchid repotting will ensure a good root system and lots of flowers.

Orchid repotting - coconut husk, by Robert Pavlis
Orchid repotting – coconut husk, by Robert Pavlis

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Learn to Grow Orchids the Easy Way

Orchids are one of the easiest house plants to grow, but they remain a mystery for many people. In this post I will provide complete orchid care instructions that are foolproof. I have grown several thousand orchids, and this method works every time. My focus here will be on the phalaenopsis orchid, but the same orchid care methods will work on most of the orchids found in homes.

Orchid Care - the basics
Orchid Care – the basics

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Elsholtzia stauntonii

Elsholtzia stauntonii, by Robert Pavlis
Elsholtzia stauntonii

Are you looking for an unusual subshrub for the fall garden? Elsholtzia stauntonii is a good choice. The Chinese mint shrub is rare in northern gardens, where its late flowering is very much appreciated.

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Spring Bulbs – Buying and Planting

It is fall and some gardeners are getting tired of their gardens. So what do they do? They go out and buy bulbs for spring flowers. For a true gardener there is always next year.

This post will walk you through the steps of how to buy bulbs and how to plant bulbs for a great spring garden.

Spring bulbs - Daffodils
Spring bulbs – Daffodils are squirrel proof, by Robert Pavlis

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Hylomecon Japonica – Which is The Real Plant?

Hylomecon japonica is a fairly rare plant that is miss-identified frequently on the internet and in seed exchanges. The AGS seedex has been sending out the wrong seeds for a number of year and discussions on their forum make it clear that getting seed from the right plant has been a global problem (ref 1).

Instead of receiving Hylomecon japonica seed, it is common to get seed from one of the other wood poppies. Since I grow Hylomecon japonica and it’s 3 imposters I decided to prepare a complete review of the plants, and provide a list of features that will allow people to clearly identify their plants.

All of the details are based on my plants which represents a limited set of clones. If your findings disagree with mine, please let me know by leaving a comment.

Hylomecon japonica main
Hylomecon japonica flower and leaves

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A Garden Myth Is Born – Plants Don’t Purify Air

Since it is Christmas, I thought it would be appropriate to write about the birth of a myth. Gardening information is full of myths–untruths that seem to take on a life of their own. As part of my effort to understand these myths, I also want to understand how myths get started. The history of most myths has been lost but every once in a while I am able to find evidence that clearly shows how a myth is born.

Understanding how a myth is born can be very educational. It provides insight into how the human mind works. It also trains you to spot future potential myths and to better evaluate the information you are reading. So let’s celebrate this holiday by peering into the start of a myth.

a myth is born - plants don't purify air
A myth is born – plants don’t purify air, source: NASA

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