It’s easy to take your shrubs for granted.
Your sturdy Sweet Viburnum hedge never lets you down, right? Your Lorapetalum blooms reliably year after year, with its pretty scented flowers.
Then, suddenly, yikes. Your good old dependable shrubs don’t look so great.
What do they need? Can you rejuvenate old shrubs? When should shrubs be replaced?
Ground Source landscape designer Eric Frisch offers some helpful tips.
“If the shrubs are 20-25 years old, it's likely they’re too old to reshape and will likely begin to deteriorate and aren’t worth saving,” Frisch says.
You can give some older shrubs new life with pruning.
“Trimming can work if the bush is in good health, not too old, and can grow back in a way that matches what you are looking for,” Frisch says.
But that’s not always the case.
Look at the core of the shrub, he says. If it’s more brown branches than green foliage, cutting it back will look pretty ugly.
When should shrubs be replaced? If your shrubs are too woody in the middle, they’ll never generate foliage there, Frisch says, “and you should just start over with new plants.”
Rejuvenation pruning can help restore shrubs that are straggly, woody, and overgrown.
After rejuvenation pruning, a shrub regrows from its roots, becoming compact again with fresh foliage and blooms.
But if more than a third of your shrub’s branches are woody without healthy leaves, the shrub probably won’t spring back.
If you want to rejuvenate old shrubs, you’ll have to be tough. Trim the shrub down to 6 to 10 inches above the ground using sturdy pruning shears. Healthy shrubs will respond by sending up new shoots.
If you want to tackle this chore more gradually, and keep your shrubs looking nicer along the way, you can do the pruning over three years.
Prune just one-third of the oldest woody branches. The next year, cut half of the old remaining branches. Year three, prune out the rest of the old branches.
Replacing old shrubs? Keep these planting tips in mind:
If you plan to create a hedge with your new shrubs, plan ahead, Frisch says.
If your landscaping needs a boost with vibrant new shrubs, we’re happy to help you choose. Then our crews will expertly install them so they’ll last in your landscape for years to come.
We’re landscape experts, but our skills don’t stop there. We’re with you every step of the way as you plan your perfect outdoor space.
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