When I finally grasped the concept of placeholder plants, it changed my life. Well, what I mean is, it reduced my garden maintenance load and I enjoyed my garden more, with less work. Not precisely life-changing, but definitely life-improving.
What the heck are placeholder plants?
A placeholder plant is a garden-worthy plant that you happen to have a lot of, which you plant in your garden until you find something you like better to grow in its place. Furthermore, it’s a plant that is easily removed once its time in the garden is over. Let’s go over that in more detail.
A garden-worthy plant–it’s not a weed. People grow it in their gardens on purpose. It’s probably “common” and maybe not exciting, brand-new, or improved, but it grows without much fuss and looks pretty.
You have a lot of it–You have a lot of it because you have the right soil conditions and climate so that it’s happy in your garden. It may be one of those plants that “everyone has” and so it was passed along to you. It may happily self-sow in your garden. It may spread to make a large patch. But . . .
It’s easily removed–It’s shallow-rooted and does not come back from every teensy bit of root left in the ground. This is key. There are plenty of plants that wind up in gardens that spread or self-sow rampantly and are not easily removed. We call these weeds–or worse.
How can placeholder plants help me in the garden?
When you start a new garden, renovate an old garden, or have a spot suddenly open up due to a plant dying, you may not know exactly what you want to put in every square inch of it. Or the plants are small and need to grow and fill in the space. You plant your placeholder plant in that area until a better plant comes along.
Here’s an example
Perhaps you remember this garden bed from my “tour” last year:
You can see there is a lot of empty space around the plants. Every time I found a solid purple Johnny-jump-up (Viola tricolor) in another part of the garden, I moved it to this bed. I moved perhaps a dozen plants and evenly spaced them throughout the bed.
Now that is both good and bad. It’s good because every place a Johnny-jump-up grew, a weed didn’t grow. It’s bad because the cute little plants filled up every available space and obscured the other plants. You couldn’t see the garden for the violas. I wanted to plant more flowers in this bed, I knew there was room for them, but I just couldn’t see where.
Pulling all those violas might sound like a lot of work, but it was a lot easier than pulling weeds. And I chose to pull them all. I could have just removed them from one section, if that’s all I wanted to plant. And of course, even though I felt the violas obscured the outlines of the other plants, they still looked more attractive than the weeds they suppressed.
The betony (Stachys macrantha) wasn’t blooming well in its old location.
I had planted little bits of the geranium a couple of years ago while I figured out what I wanted to plant in that area. They do a great job of keeping the weeds away. In this case I only ripped out enough geraniums to give the betony the space it needs. I need to keep an eye on the remaining geraniums to make sure they don’t overwhelm the betony. They will come out more easily than the equivalent amount of dandelions.
What are some other good placeholder plants?
plus various other hardy geraniums, bugleweed (ajuga), and probably other plants that I’m forgetting.
What’s the catch?
The catch is, you have to remember that they’re just placeholders. After a while, your eye gets used to them and skips over them when you’re looking for a spot for the plant in your hand. And then, you have to have the willpower to pull them out. I love Johnny-jump-ups. They’re so sweet. I had to remind myself that they were leggy and on their last blooms. Pretty soon they would be nothing but seedheads and wan stems.
Pulling perfectly good plants out of the ground and throwing them on the compost pile is not for the faint of heart or novice gardeners. Sometimes I pot up a few for garden club plant sales or visitors to my garden, to ease the pain–but only a few. After all, if they’re placeholder plants, usually everyone already has them, and are getting rid of their extras at the plant sale. Conversely, if you have a new garden, shop the garden club plant sales for placeholder plants of your own. Or just beg some off your gardening friends with more established gardens.
I would much rather see a growing patch of chrysanthemums than a sea of mulch or a carpet of weeds, so using placeholder plants helped me establish gardens here without being overwhelmed. It has made me a more relaxed gardener–there are far fewer weeds. And since placeholder plants by definition are plants that thrive in my garden, I find I am surrounded by happy plants. And that makes me happy.
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