Amethyst Flower – Browallia speciosa

The Amethyst Flower will make a splash of colour on a windowsill, especially if placed among foliage plants. It can also be put outside in a sunny spot in the summer months, either on a patio or balcony.

The leaves of the Amethyst Flower are broad and lance-shaped; flowers appear where the leaves join the stems. Although the plant may occasionally bear only a few flowers at a time, the flowering season is fairly long. And if you remember to cut off the flowers as soon as they wither, you will prolong the flowering period.

Amethyst Flowers are generally available in spring and summer, but you may also be able to buy them in winter as the plant does not need long hours of daylight to produce its flowers. Given the correct temperature it will bloom at any time of the year. It therefore makes an ideal plant for the darker months when few plants are in flower.Amethyst Flower - Browallia speciosa

The most enjoyable feature of this plant is that you can have flowering plants all year round if you sow the seeds at intervals throughout the year. When your old plant begins to look tired, loses its leaves and stops flowering, you can replace it with a new plant.

The Amethyst Flower is a small bushy plant that grows from 30-45cm (12-16in) in height.

Colours and varieties The blue-flowering Amethyst Flower is the one most frequently seen. Other varieties include Browallia speciosa ‘Alba’ with white flowers, and B. speciosa ‘Vanja’ with dark blue flowers. None are fragrant.

Growing from seed

If you want flowers in the summer, sow during February—March.

1. Sow seeds in a propagating tray, in peat or potting mixture with a little sand. Sow seeds thinly on the top and cover with a thin layer of mixture. Cover the tray with the lid.

2. Alternatively, sow seeds in Jiffy pots that have been well soaked in water. Put several seeds in each. Cover with glass or polythene.

3. Place the pots or tray in a warm spot, about 18-20°C (65-68°F), preferably over a radiator. Seeds germinate in 8-14 days.

4. When the seedlings have reached a reasonable size, prick them out carefully. Pot on into 8-10cm (3-4in) pots, and put 4 plants in each.

5. Do not let the temperature fall below 10°C (60°F). Pinch out the tops of the plants once or twice as they begin to grow to encourage compact bushy plants.

Plant Problems

The base of the plant rots if the plant is given too much water. Treatment: Once the base has started to turn black the plant cannot be saved and must be discarded.

Yellow leaves occur when the plant is too cold.

Prevention: Keep the plant in a warm position.

Aphids often attack the plant and it becomes sticky.

Treatment: Wash off isolated insects and spray with an insecticide if the insects are plentiful.

The plant is droopy. It needs more water. Prevention: Water more frequently.


This is an undemanding plant that is easy to care for if given plenty of light and water. Remove withered flowers to prolong the flowering season.

Potting: As the plant is an annual there is no need to repot. The mixture the plant is in when you buy it is quite adequate. If you grow your own plants from seed use equal parts of potting mixture and sand.

Water generously during the life of the plant. If the potting mixture feels dry on the surface the plant needs to be watered. Plants that are grown indoors during the summer should be misted regularly, especially during very warm weather.

Feeding: Feed with a standard liquid fertilizer each time you water the plant.


Light: In the house, the Amethyst Flower should be placed in a very bright position, but it should be protected from direct sunlight. If it is grown on a patio it will tolerate direct sunlight as long as it is kept well watered.

Temperature: This annual will thrive and flower in average room temperatures.

When to buy

The plant is available at most times of the year. Buy when the buds are just beginning to show their colour.

Make certain the leaves are healthy and there are a number of flower buds about to open.

The plant is an annual and is discarded after it has flowered.

Amethyst Flower

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