There is a wide variety of flowering houseplants, but those with blue or blue-violet blooms are a little less common. However, there are at least 10 varieties you might want to consider for your indoor spaces. Some of these are grown more often than others, but all of the varieties can be grown inside, either in containers or hanging baskets.
There are few households that have not grown African violets. These plants are easy to grow and propagate. There are several violet-blue varieties.
Hydrangeas, which come in a range of blues and blue-violet colours, can also be grown successfully indoors. There are ever-blooming varieties available, and hydrangeas can be easily transplanted outdoors as they become larger.
There are several varieties of hibiscus which grow indoors. One in particular, Blue Ballerina, is a dusty blue colour with a dark red centre. Hibiscus can be moved outside in warmer climates, but need indoor protection in the winter.
Lavender has pale blue-violet blossoms on grey-green leafy stalks. An added benefit of growing lavender is its clean, pleasant scent.
Streptocarpella is a relative of the African violet. Concord Blue is a variety that is often grown indoors.
Plumbago is grown as a flowering shrub in tropical areas. It produces clusters of light blue flowers, and some smaller varieties can be successfully grown indoors.
Blue exacum comes in a range of colours, from pale lavender to deep blue. It is a small plant, easily grown in containers. Some varieties are lightly scented as well. Consider the following varieties for your indoor containers: Deep Blue or Midget Blue.
Blue varieties of heliotrope are another consideration for indoor gardeners. They are low-maintenance plants and are easily grown in containers. Marino Silver Blue is a recommended variety.
Lily of the Nile
Agapanthus, or lily of the Nile, is grown from bulbs. These plants produce lilylike foliage with tall stems topped by clusters of blue blossoms. They require a larger container than some indoor plants.
Asarina Scandens, sometimes called a trailing snapdragon, grows well on a trellis or in a hanging basket. It can grow to 300 cm (10 feet) in length, and should be cut back in the fall. The variety Sky Blue is often recommended for indoor gardens.
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