Plants in containers help decorate the interior of a home and also allow gardeners with patios but no yards to grow plants. Several types of evergreen shrubs grow well in containers as long as the gardener can simulate their ideal outdoor environment indoors or on a patio. Growers can keep the shrubs indoors for the duration of their lives or eventually plant them outside.
Azaleas stay green year-round and can grow indoors or outdoors in containers. Azaleas have colourful flowers and grow best in somewhat acidic soils. University of Missouri Extension suggests that potted azalea owners put the shrubs in the coldest rooms of the house, because cool temperatures help the plants survive longer than they will in very warm rooms. Gardeners should put them outdoors during the spring through fall to help simulate the plants' natural outdoor environment and get them to bloom again each year. Azaleas sometimes start turning yellow when they need more iron or need more acidic soil.
People often give blooming hydrangea shrubs as Mother's Day or Easter gifts, according to the University of Missouri Extension. After the potted hydrangeas bloom, the owner can either transplant them outside or keep them in the containers as houseplants. Potted hydrangeas need frequent watering and grow best in direct sunlight. They stay green year-round. Texas A & M University suggests fertilising potted hydrangeas with a balanced 20-20-20 ratio fertiliser weekly according to the fertiliser package instructions.
Some varieties of roses grow well in containers and stay green all year. Iowa State University and Clemson University suggest miniature rose shrubs for indoor or outdoor decorations. Other shrub rose varieties also grow in pots but take up much more space than miniature roses. Roses require several hours of direct sunlight per day, so growers should place them on patios or sunny windowsills. Roses in pots dry out more easily than roses planted outside, so owners should make sure to water them when the surface of the soil completely dries out. They also grow best with a balanced fertiliser once or twice per month while the rose shrubs have blooms on them. Roses prefer moderate daytime temperatures of around 70F and nighttime temperatures of around 60F. Owners should keep them away from very cold drafts and heaters, as Iowa State University suggests.
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- University of Missouri Extension: Care of Flowering Potted Plants
- University of Rhode Island: Landscape Horticulture Program: Hydrangeas
- Texas A & M University: Aggie Horticulture: Hydrangea
- Iowa State University: Reiman Gardens: Miniature Roses
- Clemson University: Cooperative Extension: Growing Roses