Geraniums can be stored while dormant as a low-effort wintering technique. With this method, zonal geraniums consistently produce positive outcomes because of their robust genetics. Other varieties of geranium may or may not survive the winter as dormant plants. Many of our grandmothers overwintered geraniums in this manner back when basements frequently had stone walls, dirt flooring, and high levels of humidity. For this strategy to work, modern basements are typically too warm and dry.
Geraniums can be prepared for dormancy by being lifted out of the ground. In chilly climates, you can choose to wait until a little frost has passed. Another benefit of a frost is that it kills insects that might be lurking among the leaves. Geraniums should be collected before a fatal frost. largely remove the soil from the roots. Plants can be pruned down by a third to a half, although it’s not required.
From the rafters in the basement, our grandparents hung their plants. Instead of rafters, use containers that support plants and enable air circulation, such as brown paper bags or boxes. Each four weeks, inspect your plants. If stems begin to shrivel, immerse the rootball for a couple of hours in a pail of water. Before putting geraniums back in their storage pots, let soil and plant surfaces dry to the point of being drip-free.
Before putting plants outside in the spring, plant geraniums. Before planting, soak the rootball for the entire night and remove any last bits of browned foliage. Be careful not to harm any growing shoots that are white or light green. Place plants near windows with lots of light to promote growth. Prior to the emergence of new leaves, stems will turn green.
Geraniums can also be potted up and placed outside in a sheltered area. If a late spring frost looks imminent, just make sure to move plants inside. Trim back any stray stems or ones that failed to leaf out once plants have leafed out and are growing outdoors.
Growing geraniums indoors is another way to overwinter them. Depending on the amount of space you have indoors, you might want to prune plants by a third to a half. Bright lighting, cool air temperatures, and water should only be applied when the soil is dry. Before taking plants inside, thoroughly inspect them to make sure you aren’t bringing insects with you.
Geraniums that have been wintered develop greater blossoms as the plants get older. In particular, this is true of zonal geraniums. Young plants are capable of producing flower heads the size of softballs. Geraniums can be kept during the winter to save money that can be used to buy other plants for your garden.
How should geraniums be cared for over the winter?
Geraniums are incredibly simple to store for the winter—just place them in a cardboard box or a paper bag and secure the top. The following advice will help them survive:
- Maintain geraniums in a cool, dry area with a temperature of 50 to 60 degrees F.
- Once a month or so, remove dried leaves from the bag or box and check for mold.
- Check the stems quickly at the same time; they should be stiff. Throw away any dried-out, shriveled stems you uncover.
- If you see that the plants are becoming really dry and crispy, give them a brief soak in water.
- Plants with stems that appear to be blackened or mildewed should be disposed away.
Geraniums are typically kept in a sack upside down. Although the exact cause is unknown, one idea holds that it does so by pushing moisture into the stems. Whatever the cause, storing them in this manner is neither harmful nor necessarily harmful.
For the winter, should geraniums be pruned back?
You should prune a perennial geranium after it has bloomed all season and starts to wither. This helps the plant store energy for the spring while simultaneously keeping it dormant for the winter. This could need to happen any time between August and late October, depending on your zone. Cut perennial geraniums down to 2 or 3 inches above the soil with a pair of trustworthy shears, ideally at nodes or new growth points. Take out any more flowers or foliage. You’ll have a collection of thick stems that is really ugly. But don’t panic, your blooms will return in full bloom the following spring.
When should I cover my geraniums for the winter?
- Make sure you thoroughly inspect your geranium plants before bringing them inside for the winter. Look for symptoms of pests and illnesses like rust and remove any dead leaves or wilting blossoms. Only zonal pelargoniums are impacted by this, but it is becoming more widespread. It arrived in the nation for the first time in 1968, and it does best in the moist summer or fall months. Fortunately, it doesn’t seem to spread to the plants quickly and is simple to treat, so merely plucking the afflicted leaves is an effective management. You might also consider using the fungicide Dithane 945 as a spray.
- Placing your overwintering plants somewhere bright and sunny will help them retain their need for light throughout the winter. Your plants will receive 50% less light if they are placed more than three feet from a window!
- Because your plants continue to thrive throughout the winter, keep the roots moist. While geraniums frequently survive droughts, they rarely flourish. Show plant growers take special care to keep the roots of their plants damp but never soggy during the winter.
- Ventilate as frequently as you can to maintain a dry environment surrounding your plants. Your plants will turn into a moldy, rotting heap if you don’t allow the air to circulate. The greatest electric fan heaters are those that operate automatically since they circulate air while simultaneously raising air temperature.
- Geraniums are fairly inexpensive to overwinter in the greenhouse because they only need to be kept frost-free. To keep temperatures above freezing, however, we do advise utilizing a heater. Set the thermostat on your heater to 5C, which is 41F. The plant will not survive if the stems become frosty! The winter months are a great time to store your delicate pelargoniums in porches, sunrooms, or conservatories.
We hope that we have provided you with enough of tips so that you can continue to enjoy your geraniums year after year. Visit our geraniums hub page, which is brimming with useful resources, for additional details on how to cultivate and take care of these well-liked plants. And do get in touch with us through our social media outlets to share your personal favorites; we’d love to hear from you.
Can geraniums be left in the ground over the winter?
Geraniums can be wintered over in a variety of methods. The plants can be overwintered in a dormant state and saved in bare-root form if they are potted and maintained in the proper conditions. They can also be kept growing or in a semi-dormant state over the winter. With assistance from the specialists, we have outlined the two distinct approaches below. Another option is to grow fresh geranium plants for the following year by taking cuttings from your existing plants.
Do geraniums in pots reseed annually?
Geraniums have the advantage of easily entering dormancy, allowing for storage in a manner akin to that of sensitive bulbs. This method of storing geraniums for the winter entails digging the plant up in the fall and carefully removing the soil from the roots. The roots should not be spotless, just clear of dirt clumps.
In a room with a constant temperature of roughly 50 degrees Fahrenheit, such as your garage or basement, hang the plants upside down (10 C.). Rehang the geranium plant after soaking the roots in water for an hour once a month. All of the leaves on the geranium will fall off, but the stems will still be alive. Replant the dormant geraniums in the ground in the spring, and they will come to life.
Hardy Geraniums vs. Pelargoniums
Pelargoniums should not be confused with hardy geraniums. You might be wondering what makes a geranium different from a pelargonium. Similar to some siblings, they are both members of the same plant family, but they could not be more unlike.
Pelargoniums cannot withstand frost, while hardy geraniums can. Pelargoniums are usually treated as annuals and replanted each year, but true hardy geraniums are perennials that grow back every year. Pelargoniums die in the winter.
Prune your Hardy Geraniums
Your sturdy geraniums will look their best and promote new growth if you prune them properly. By correctly pruning your hardy geraniums after the blooming season, you can encourage repeat blooming. The majority of geraniums can be cut back twice in a single season, which allows them to bloom at least three times.
When to Prune
Your hardy geraniums should be pruned in accordance with the season you are in. Rozanne will require various cuts in the spring, summer, and fall. To maintain your blooms rich and healthy, mark your calendar and adhere to our seasonal trimming recommendations.
What tools you need
Your geraniums may be pruned fairly easily. All you’ll need is the ability to prune, a pair of sharp pruners, your favorite mulch, and your favorite gardening gloves. Watch this video to learn more about pruning strategies in detail.
How to prune
You shouldn’t be concerned that pruning your flower’s back will harm her. The majority of hardy geraniums require trimming to promote new growth and prevent them from encroaching upon other plants.
Trim the plant back to within a few inches of the ground or to about an inch above the main stem once the flowering is completed or you find old growth. Remove any brown stems or yellow leaves after that by going inside.
Soon after trimming, more leaves will start to appear. Some resilient geraniums even have the ability to blossom again. Maintaining correct pruning on your plants encourages new development and keeps them from spilling out throughout your landscape.
What pruning advice do you prefer? Share them with us in a comment on our Facebook page!
Will my geraniums survive the winter indoors?
Pelargonium species, which come in pots, make great indoor plants that may be grown all year round. They normally become available in March through June, and if given enough light inside the house, they will bloom continuously. There are several fresh varieties, like vining and hanging basket cultivars. They are available in many different types of containers and at varying stages of development.
When should geraniums be wakened from dormancy?
Dormant, full-size geranium plants can be overwintered in the same way as animals hibernate during the winter and then come out of it in the spring.
Steps to Overwintering Dormant Geraniums
- Before the first frost, transplant the geraniums into containers and prune the plant back by about half. Dehydrate the soil in the pot.
- Put a paper bag on top of each plant and turn it over.
- Containers for dormant plants should be kept in a garage or basement that is chilly, unheated, and slightly damp.
- Every few weeks, check the geraniums to make sure the stems and leaves are not shriveling. Spray them with water or mist the roots if they start to show signs of drying out. After that, let the plant thoroughly dry before putting it back in the paper bag.
Reviving Dormant Geraniums
- Relocate your dormant geraniums to indirect light around 6–8 weeks before the final anticipated frost.
- Trim any dead leaves from the plants, and cut stems back to a healthy, green growth.
- Give the potted plants a good soaking and some fertilizer that has been diluted.
I have geraniums, when should I bring them inside?
Bring geraniums indoors before the first frost to overwinter them. Drag the entire pot indoors where they should stay for a few weeks while you take care of other more urgent garden tasks if you are growing them in a tub or container and have limited time (as it generally is in the fall). If they were grown in beds, simply remove them with a little dirt, place them in a pot, and water them sparingly. They will survive for a few weeks until you can deal with them.