Leave them alone! Really. Quit tinkering with your plants trying to give them every little thing they need. What they really need is good soil, and adequate amount but not an over abundance of water and some sunshine. That’s about it. Quit fertilizing them and pouring all kinds of concoctions on them.
They know what to do. They are genetically wired to do one thing and only one thing. Make leaves and make flowers! Okay, so that’s two things. But they know that. They don’t need you sticking your nose in their business. If you give them the three things mentioned above and leave them alone they will grow and bloom.
Nikko Blue is in the macrophylla family of hydrangeas and therefore most people say to prune it right after it blooms. That’s great advice and you should follow it, but this spring I discovered something that has me a little perplexed. I bought about 50 Nikko Blues this spring. They were in the field and were dug just a tad late. On top of that I think they got tazed by a little frost. That’s a new gardening term, Tazed. In other words, they didn’t look so good, and were pretty much unappealing.
So I decided to prune them really hard, even though it was the middle of May.
What happened? After they were pruned they flushed out with beautiful new growth and then started blooming like crazy! Not only did I prune them in the middle of May, I cut them back really hard.
I’ve said it before and I’m sure I’ll say it many, many times in the future.
Quit tinkering with your plants!
They don’t need all of those store bought concoctions to make them do this or do that, sing and dance and jump over the moon. They just don’t need it! They need good soil that drains well, water on a regular basis, and sunshine. That’s what they need. That’s all they need.
Mike! Liar, liar Pants on Fire!
You just said you fertilized these hydrangeas in June! You’re telling me not to fertilize and you are fertilizing. You tell me one thing and then you do something else yourself. What gives Mike?
Great question! You caught me. This is really important for you to understand. The plants in my landscape do not get fertilized ever. Except maybe the roses because if and when I remember to do so I spray them with Bayer 3-1 Rose and Flower Spray and that does contain some fertilizer. All of the other plants in my landscape do not get fertilized ever. They haven’t been fertilized since I bought them.
Why no fertilizer for the plants in my landscape? They just don’t need it. They do absolutely fine without it.
Plants that are grown in the nursery in containers are grown in what is called a soil-less growing mix. In other words, the soil in the pot is not soil at all and it does not contain any soil. It’s usually a combination of bark mixes. There are a lot of reasons for this and a big one is drainage. These bark mixes drain really well. But that means that a lot of nutrients are getting washed away before they can be absorbed by the plant. And these soil-less mixes are really low in nutrients to begin with. So plants grown in containers have to be fertilized. Plants in a landscape do not have to be fertilized. I hope that makes sense.
If your Nikko Blue is not Blue, or Blue enough you can add Aluminum Sulfate to the soil and that should make the blooms more blue in color. You can get the Aluminum Sulfate at any full service garden center.
How Do You Propagate Hydrangeas?
Most hydrangeas are easy to propagate if you do them in the summer using soft new growth. Not spring, but summer. Mid June or later.
Quit tinkering with your plants. Just let them be plants. They know what to do. In order for plants to make a flower bud they have to slow down or almost quit growing all together to work on flower buds. But if you are dumping all kind of performance enhancing concoctions on them they can’t slow down and make flowers. It’s like you holding the accelerator pedal all the way to the floor then trying to turn the corner. It just not going to work!