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July 2010
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Gloxinia: characteristics, growing and planting conditions, uses and care.

Gloxinia may refer to the genus Gloxinia of flowering plants in the family Gesneriaceae. The plant species Sinningia speciosa, formerly classified in the genus Gloxinia and still commonly known by that name, in the family Gesneriaceae. Gesneriads are most often found in tropical or subtropical regions.
– These modern hybrids have brilliantly colored trumpet-shaped flowers and very beautiful, large, flat, velvety mid-green leaves.
– The blooms vary in color from rich crimson, deep red, violet and white to various combinations of such colors.
– Gloxinas are sturdier with thick stems, huge leaves and profusion of large flowers.
– Gloxinia blossoms grow up to 4 or 5 inches long and 3 inches wide.
– The luxurious bell-shaped flowers are suspended above the plant’s hairy foliage on short stems.
– These seed- grown hybrids produce better blooms because they don’t devote energy to their root systems.

Growing and Planting Conditions for Gloxinia

– Placed in a bright sheltered location with 2-3 hours sunshine, preferably morning sun.
– Gloxinia also like a temperature above 60º when in growth.
– Soil should be uniformly and constantly moist.
– If you are planning to grow gloxinia using dormant tuber roots then sow them in moist and well drained soil.
– For containers, use a soil that is less medium, comprising peat and perlite.
– For outdoor gardening soils, choose soil which is slightly acidic or has a neutral pH, ideally, sandy soil with organic composting matter.
– Spray gloxinia flowers with water twice a day, once during the early morning and again at mid-day, to increase the relative humidity of the air.
– Water once every five days to keep the soil consistently moist.
– Reduce watering frequency gradually when the foliage begins to die back.
– Keep the gloxinia flowers in this location for eight to 10 weeks, or until new growth begins again.
– Feed gloxinia when new buds appear using an all-purpose houseplant fertilizer and start watering.
– This resting period is necessary in order for the plant to gather energy to grow the next season of flowers.
– Grow more gloxinia from seed, tubers or leaf or stem cuttings. Tubers are only available for spring planting.
– The simplest way to grow more gloxinias is from leaf or stem cuttings.
– Use 5-inch pots or bulb pans for smaller tubers, and 6- or 7-inch pots for larger bulbs.
– Select tubers that feel firm, not dry, shriveled or soft.
– Fill the pot halfway with the potting soil and place the tuber in the center of the pot, cupped side up.
– Add soil to cover the top of the tuber with about 1/2 inch of soil.
– Keep the soil moist but never soggy, as too much water causes the bulb to rot.
– Sprouting is slow, so don’t be discouraged if the first sign of green doesn’t spring up for four to six weeks.


– Water gloxinias by simply placing them in a bowl that is partially filled with water and fertilizer.
– A balanced fertilizer (i.e. 15-15-15) is recommended at each watering.
– Gloxinias should not be exposed to the rain.
– Add liquid food to the water every week when the flower buds start appearing.


– Charming plants for window gardens.
– Used in home greenhouse.
– Protected shady spots outdoors in the summer.

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