Gloxinia / Brazilian Gloxinia
Sinningia speciosa
description
Gloxinia is a tuberous houseplant with velvety leaves and large bell-shaped flowers.
benefits
- Pet-friendly, non-toxic to animals
- Flowering
- Suitable for containers
How to care for Gloxinia
sunlight
In Brazil, gloxinia grows in bright, filtered woodland light. At home, give it a well-lit spot with sun softened by a sheer curtain or set back from the window.
Bright indirect light
An east-facing window is often ideal. Near a south or west window, keep it out of hot direct rays, which can scorch the velvety leaves and fade flowers. Low light usually means fewer buds and stretched growth.
watering
Keep the mix lightly and evenly moist while Gloxinia is leafy and flowering, but never leave it waterlogged. Water thoroughly, then let all excess drain away.
Active growth and flowering
Water about every 4-7 days in bright, warm conditions. Check first: water when the top 1 cm of mix feels dry and the pot is noticeably lighter, while the root ball beneath is still faintly moist. Smaller pots, porous mixes, warmth, and brighter light dry faster.
After flowering and dormancy
As growth slows and leaves yellow, gradually reduce watering. Once the foliage has died back and the tuber is resting, keep the pot dry until new shoots appear. A leafy plant in cooler or lower light may need water only about every 7-12 days, so rely on the soil check rather than the calendar.
humidity
Comfortable at home
Gloxinia comes from humid Brazilian woodland, so it appreciates moderately moist air. Average indoor humidity is usually fine, but keep it away from heating vents and strong air conditioning.
Preferred while growing and flowering
Air that stays very dry can cause crisp brown leaf edges, wilting between waterings, or flower buds that dry up before opening. Good airflow still matters, especially around its fuzzy leaves and blooms.
- Group plants together or run a humidifier during dry heated months.
- Keep the pot on a pebble tray with water below the pot base for a little local moisture.
- Do not leave the plant crowded in damp, still air, which can encourage fungal problems.
temperature
Active growth
Winter minimum
Native to warm Brazilian forests, gloxinia prefers steady indoor warmth while it is growing and flowering. Keep it away from chilly glass and heating vents, as cold or hot air can shorten the bloom display.
nutrition
March - August
Feed every 2-3 weeks while gloxinia is making leaves or flowering, using a balanced liquid houseplant fertilizer at about half strength. Apply to already-moist soil. Stop feeding when growth slows and the foliage begins to die back for dormancy.
Phosphorus
Phosphorus supports flower production and healthy tuber growth. A regular balanced fertilizer provides enough without using a high-strength bloom feed.
Potassium
Potassium helps support sturdy growth and flowering. It is supplied by most balanced fertilizers used at the recommended diluted rate.
soil
Loose, moisture-retentive soil
Gloxinia needs an airy mix that holds some moisture without staying soggy around its tuber. Combine quality potting soil with perlite and a little coco coir or fine bark for a rich, free-draining texture.
pH 5,5 - 6,5
This is slightly acidic soil. Most fresh houseplant mixes are suitable, especially peat or coco-based mixes; avoid adding lime unless you know your water and mix are very acidic.