I can’t imagine a summer without geraniums. They’re so cheap at the store but they give you seemingly endless blossoms in vibrant colors that defy description.
If you aren’t into heavy garden maintenance, they’re also pretty easy to keep. They don’t demand a lot but they’ll keep offering up flowers until the deep freezes arrive.
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But if you’re willing to put in some effort, you can make your geraniums last longer and bloom even more.
If you grow your Pelargonium as an annual, your pruning job will be a lot simpler. Overwintering your plants or growing them as perennials, indoors or out? You have a slightly bigger job ahead of you.
Here’s what we’ll talk about in the guide ahead:
What You’ll Learn
The steps laid out in this guide apply to both garden and scented geraniums. The only thing that varies depends on whether you grow your plants as annuals or perennials.
When to Prune Geraniums
When should you prune your geraniums? Pretty much any old time you want.
Are the plants looking kind of rangy or thin? Break out the pruners. Have they stopped blooming? Prune away.
Is it getting droopy? Has dead blossoms? You know what to do.
Okay, the answer is pretty nebulous, but there are a few hard and fast rules for pruning.
If you overwinter your plants indoors or grow them as perennials, then you absolutely must prune twice a year, one time in the spring and once again in the fall.
You should also deadhead the flowers when they’ve begun to fade or your plant will eventually stop producing blossoms.
Necessary Tools
The tools you need depend on the size of your plant and whether you are deadheading or pruning. Deadheading can be done with just your fingers, though you’ll be able to create a cleaner cut with scissors or secateurs.
Larger perennials that have been growing for years call for hand pruners, while annuals can be pruned with scissors.
Serious gardeners swear by Felco pruners for good reason. They last for decades, they maintain a sharp edge, they make clean cuts, and they have an ergonomic design that reduces hand fatigue.
I carry the F2 size with me every time I go out into the garden because you never know when you might need to lop something off.
They cost a bit more than other pruners, but in this case I firmly believe that you get what you pay for. To grab a pair for your gardening kit, pop on over to Amazon.
Deadheading
Deadheading encourages more blossoms. In general, when blooms fade, the plant thinks it has completed that part of its reproductive cycle and it stops sending out flowers.
As soon as the blossoms start to turn brown, it’s time to remove them. This doesn’t hurt the plant at all, and since it encourages more blossoms, don’t hesitate to be brutal about your deadheading schedule, and do it often.
Don’t wait until the entire head is brown. If about half of the flowers have started to turn, off with their heads!
To remove spent blossoms, snap the stem off well below the flower head near the base of the stem. You can also use scissors or pruners to do this.
Get more tips on deadheading flowers here.
Overwintered Plants
For geraniums stored as dormant plants during the winter, prune off all of the flowers and flower stems, along with about a third of the length of each stem, before you place the plant in its winter home.
You can do this while the plant is still in the ground or after you’ve removed it and washed the soil away from the roots.
Removing extra stems and growth reduces the burden on the roots and stems, which only have so much capacity to store nutrients to feed the leaves.
In the spring, take the pruners out again and trim away any dead tips or dead foliage. Dead tips will be brown or black and shrunken.
Don’t worry, this dead tissue is totally normal. New, bushy growth will emerge below where you trim the stems.
Annuals
Garden geraniums need little in the way of pruning if you’re just growing them during the spring and summer.
You can clip back any leggy growth and any stems that grow exceptionally long throughout the growing season to create a more pleasing shape.
You should also always remove any broken stems or any that show signs of disease or pest infestation. Use a pair of scissors or clippers to remove any growth and make your cuts above a leaf node.
Otherwise, feel free to leave them to their own devices, and remove them from the garden at the end of the season.
Perennials
If you keep your geraniums year-round, whether indoors or out, you’ll want to trim them in the spring and fall. Perennial types need the most pruning because they tend to become leggy over time, with long, sparsely covered stems.
You need to provide them with some shaping to encourage a tidy form and profuse flowering.
Sometime around October, take a pair of clippers and cut the entire plant back by about a third. Extremely long branches should be cut back in line with the rest of the plant.
These plants don’t go dormant during the winter, but they will stop blooming as much – or at all – during the shorter days of the year.
Pruning them back encourages them to start some new growth and send out blossoms when the days start to lengthen. It also creates a pleasant shape.
Next, take out any crowded growth. Branches that cross each other should be thinned, and any branches with primarily yellow foliage should be trimmed back below the lowest leaf.
In the spring, all you need to do is a little maintenance. Prune out any leggy or crowded branches, and do a little shaping.
Keep Your Geraniums in Tip-Top Shape
One of the nice things about geraniums is that they don’t require much work to keep them looking their best. Unless you grow them as perennials, you can sort of forget about them except for a little bit of deadheading.
What kind of geranium are you growing? Do you keep it in a container or is it planted in the ground? Are you overwintering your plants? Let us know in the comments section below!
If you’re looking to make the most of growing geraniums, we have a few other guides that you might find helpful. Check out some of the following for more information:
Wonderfully informative with specific rather than vague directions.
Thank you, I hope we were able to help!
I have 8 large potted geraniums I want to put in the garage for the winter. I plan to put them in windows, garage temp. 60 deg. How far back do I cut these, and also will put them in aluminum trays and water before I leave in Jan. Any and all advice would be appreciated. Thank You
Hi Cathie – your geraniums will likely stay green and alive during the winter if you keep them in the sun and in 60-degree temps. That means you don’t need to cut them back dramatically. Just prune them back by a half or two-thirds. Depending on how long you’ll be gone, you might be fine just watering them when you leave and when you return. I only water my active overwintered geraniums once every few weeks. Otherwise, you can fill a wine bottle and stick it in the soil upside down. This will trickle water down into the soil while… Read more »
This is my first time with geraniums or any outdoor flower, really. They were so beautiful this summer it seems a shame to let them die. I’m in the DC area, so I have perennials. They are still in the pots that I purchased them in at the grocery store. Yours is the first website that gives clear pruning instructions for bringing them in this winter. I just purchased my first pruning shears! I have no direct sunlight in the house. Will they be able to survive or is this a lost cause? I can put them in the total… Read more »
Hi Jennifer, geraniums are a great flower to start with. They’re so beautiful and incredibly forgiving. You have a few options, here. You could place them in the dark indoor storage area but if it’s too warm they’ll keep trying to grow. The space needs to be below 65°F and preferably closer to 50°F. If that’s not an option, you might want to just purchase a grow bulb and grow them near a window with the bulb shining on them. Something basic like this Miracle LED Grow Light Bulb from Gardener’s Supply Co. is perfect. Yes, you should trim them… Read more »
Nice, and friendly.
Since I’m the house gardener, after my wife bought a gorgeous orangish /red geranium, I’ve grown it indoors. In a good size pot the initial geranium was approx. 1 ft diameter. Now it’s 3 1/2 ft, if not 4 ft across!
Other than trimming back spent blossoms, and flowering stems, I never thought about pruning the geranium. About October, yeah but is this good time to trim / thin? We will follow your articles guidelines. We live in Lake County, Cal
Sounds like your plant is very happy! If it isn’t becoming leggy and it’s still blooming as well as ever, you don’t need to thin it or trim it too much. October is the perfect time in your area.
Hi I brought in three geraniums last fall kept them in my four season sunroom and they have bloomed all winter long now they are full of flowers and I would like to put them outside. What do I need to do? One is almost like a little tree.
Hi Micheline, it sounds like your geraniums are doing great and are ready for the big outdoors. At this point, you can harden them off and take them outside. Hardening off is the process of gradually introducing plants to the harsher conditions of the exterior. Do this by bringing the geraniums outside for an hour and then bringing them back in. Over the next six days, add an hour outside each day. Then you can place them where you want. If you want to do a little pruning to change the shape of the plants, now is a good time… Read more »