Easy ways to overwinter your geraniums aka pelargoniums successfully. Overwintering your geraniums is a great way to save money.
Want to overwinter your geraniums (aka: pelargoniums)? Today I am sharing some easy ways to keep your zonal geraniums alive over winter.
Though if you like to grow them as annuals and don’t mind replacing them year after year then go right ahead. No judgement here.
Plus you can grow them easily from seed and have tons of geraniums without going to the work of trying to keep last years plants.
Overwinter Geraniums Grown in the Ground
Unless you live in Zone 10 or 11 your geraniums will not make it through the winter planted out in your garden.
Before your first frost or freeze cut the geraniums back by half before digging them up. Be sure and only keep healthy plants.
After digging the plants up shake off the soil.
Give the plants a thorough washing with a garden hose outfitted with a spray nozzle like this one linked here.
Once dry you can give them a nice spritz of this 3 in 1 spray to combat bugs, fungus and mildew.
Rinse the soil from the roots (critters can be hiding in the soil) and pot the geranium up into a container using a fresh potting mix. (most potting mixes will have fungus gnats)
Related: How to Get Rid of Fungus Gnats
Place in a cool but above freezing space until Spring, like an unheated garage or basement. Check periodically to see if it needs water and cut off any spindly growth.
Bring them out after danger of heavy frost or freezing temps. I usually bring them into my greenhouse and let them get growing after their winter hibernation.
Overwinter Potted Geraniums
I grow my geraniums in pots and containers all summer and this method is one I share in the video.
Before the first frost cut the geranium plant back to a nub just above the soil line. It won’t hurt the plant.
Place the plant, pot and all into your cold storage place, garage or basement. I cut all the plant back to prevent mildew and fungus growing on the leaves.
You can also leave part of the plant as you do in the preceding method. The 3 in 1 spray will help prevent problems but I have better success in cutting the plant all the way off.
Bring Geraniums into the house in winter
I have seen people grow their geraniums in their homes during the winter. Even getting them to bloom. I don’t have bright enough light entering my house so that doesn’t work for me.
But if it did here is how I would do it. Just clean the plant with the spray hose and give it a good spray with the 3 in 1 protective spray.
Since you are bringing the plant in from outdoors you should also treat the soil with the mosquito bits. Place it in a bright space like an eastern or southern facing window.
Is your plant to big to bring into the house? Then do this…
Take cuttings to overwinter geraniums
Geraniums root very easily from cuttings. I have an entire post dedicated to it here, How to Root Geraniums from Cuttings.
You can put a few cuttings into a smaller pot that fits on your windowsill or keep them on a rack with grow lights.
Once you have roots you can pot them in 4 inch pots which can fit on most windowsills.
When Spring arrives you might find the cuttings so successful that you will have plenty to give away as gifts. \
Pot them up into larger containers or plant them out in your garden.
Dormant Storage of Geraniums in Winter
This is a method several have used but I have not yet.
Take the geraniums out of the soil whether in the ground or in containers.
Remove most of the soil from the roots. Place the plant in an open paper bag or place them in a cardboard box. One gal I know loosely wraps them in newspaper.
Keep them in a room or area that stays about 40 to 50 degrees. Check them during the winter months.
Some say to spritz the roots with water once a month and another person claims you need to soak them for a good hour or two.
I am sure the method may depend upon how humid the environment where they are stored is.
And that is the easy ways you can overwinter your geraniums.
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Happy Gardening in winter!