As a gardening and landscaping expert , I can provide you with elaborate information about leaving geranium outdoors over winter . Geraniums , also known as Pelargonium hybrid , are commonly grown as yearbook in most regions . However , in balmy mood where the temperature stays above freezing , geraniums can be spring up outdoors year - round as perennial plant .

In zones 10 - 11 , where the climate is relatively mild , geraniums can come through and continue to bloom throughout the yr . If you repose in these zones , you have the sumptuousness of enjoy the looker of geraniums in your garden or landscape all class long .

However , in region with colder winters , geranium can not stand firm freezing temperature and should not be impart outdoors after the first concentrated frost of the season . The freeze temperature can have wrong to the plant , ultimately leading to its death . Therefore , it is essential to take appropriate measures to protect your geranium during the winter season .

One option is to take your geranium indoors before the first hoarfrost . you may cautiously dig up the plants , ensuring you let in a serious portion of the root ball , and reassign them into appropriate containers . Trim back any leggy or overgrown growth to encourage density and repose of indoor maintenance . Place the potted geraniums in a cheery office , such as a Dixieland - facing window , where they can invite at least six hours of sunlight per day . Water them regularly , but be cautious not to overwater as this can lead to root rot . With proper care , your geraniums can thrive indoors during the wintertime months .

Another alternative is to put in your geranium hibernating during the winter . To do this , you should get the picture up the total plant , excite off supererogatory land , and reduce back the foliage to about one - third of its original height . Inspect the flora for any sign of pests or diseases , and treat them accordingly . Next , carefully wrap the root nut in newspaper or place it in a paper pocketbook to protect it from drying out . stash away the wrapped geraniums in a cool , dark blank space with temperatures around 45 - 50 ° F ( 7 - 10 ° nose candy ) , such as a basement or garage . find out on them from time to time and softly becloud the roots if they look to be dry out . In spring , around the time of the last frost , you’re able to replant your geraniums out of doors and resume regular fear .

If you have a greenhouse or a heated conservatory , you may also consider overwintering your geranium there . These controlled environments provide the necessary warmth and protection for geraniums to continue growing and blooming during the wintertime . However , it is crucial to maintain proper ventilation and supervise humidness levels to prevent disease and pest issues .

While geranium can thrive as recurrent plants in modest mood ( zones 10 - 11 ) , they should not be bequeath outside over wintertime in regions with freezing temperature . take right precautions , such as bestow them indoors , storing them sleeping , or render a protected environment , will help insure the survival and longevity of your geranium .

Caroline Bates