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Summer Hyacinth – Galtonia candicans

Discover the Summer Hyacinth – Galtonia candicans, a stunning flowering plant that adds vibrant color to your garden from August to early September.

Summer Hyacinth – Galtonia candicans is an extremely useful plant in that it flowers in profusion in the border throughout August and early September – a difficult period not only for bulbs but for most herbaceous plants, for until the first Michaelmas daisies appear it is a period of little colour.

Key Information:

Summer Hyacinth – Galtonia candicans is a useful plant that flowers in August and early September, providing color during a period when many plants do not. Bulbs should be covered with straw mulch in cold, heavy soil or lifted and wintered indoors. Bulbs are planted 4 in. deep and 9 in. apart in groups of four. They grow to a height of 4 ft. and make a delightful display with their white drooping bells.

  • Flowers in August and early September
  • Requires straw mulch in cold, heavy soil
  • Bulbs planted 4 in. deep and 9 in. apart in groups of four

Summer Hyacinth – Galtonia candicans is an extremely useful plant in that it flowers in profusion in the border throughout August and early September – a difficult period not only for bulbs but for most herbaceous plants, for until the first Michaelmas daisies appear it is a period of little colour. In a cold, heavy soil, bulbs may not be completely hardy and should either be covered with a long straw mulch during November or be lifted and wintered indoors until planted out again late in March.

As all bulbs seem to remain in better condition in the ground provided it is well drained, I prefer to incorporate in the soil some sand and liberal dressings of leaf mould. The bulbs are planted 4 in. deep and 9 in. apart in groups of four. As they grow to a height of 4 ft. they should be placed towards the back of the border. With a hedge, wall or wattle hurdles as a background, they make a delightful display with their spires of pure white drooping bells.

Although related to the spring-flowering Hyacinth, it is a much larger-growing and altogether more conspicuous subject. The species G. candicans, often known as Hyacinthus candicans or the Summer-flowering Hyacinth, produces good-sized bulbs, long, strap-shaped, pointed leaves and strong, erect-growing flower-spikes, 4 ft or more high. In the summer these spikes bear 20 or more large, drooping, sweet-scented, pure-white bells of great beauty. A group of three or more bulbs, planted 5 or 6 in. deep in the early part of the year, will produce a very bold effect in the summer.

Any good, well-drained ground is suitable, and the sunnier the position, the better the show. A winter mulching of litter, leaf mould or decayed manure will prove beneficial.

More Information on Summer Hyacinth – Galtonia candicans

The Summer Hyacinth, also known as Galtonia candicans, is a remarkable plant that blooms profusely from August to early September, providing a burst of color during a time when many other plants are not in bloom. This makes it a valuable addition to any garden or border. While most herbaceous plants struggle to bring vibrancy to this period, the Summer Hyacinth thrives.

To ensure the plant’s survival and optimal growth, it is important to consider the planting conditions. In areas with cold and heavy soil, the bulbs may not be completely hardy. To protect them, it is advisable to cover the bulbs with a layer of long straw mulch during November or lift them and store them indoors until late March when they can be planted out again. Incorporating sand and generous amounts of leaf mould into the soil can improve drainage and help maintain the bulbs’ condition.

The Summer Hyacinth stands out not only for its flowering period but also for its impressive size. Unlike its spring-flowering relative, this plant grows much larger and commands attention with its strong, erect-growing flower-spikes that can reach a height of 4 feet or more. Each spike bears 20 or more large, drooping, sweet-scented, pure-white bells, creating a stunning display that adds elegance to any garden.

Planting three or more bulbs together, about 5 to 6 inches deep, early in the year can create a bold effect during the summer months. The Summer Hyacinth thrives in well-drained soil, and the sunnier the position, the more spectacular the show. Additionally, a winter mulching of litter, leaf mould, or decayed manure can provide beneficial nourishment to the plant.

Overall, the Summer Hyacinth is a captivating and versatile plant that brings beauty and fragrance to gardens during a time when color is often scarce. Its ability to thrive in various conditions, coupled with its striking appearance, makes it a cherished addition to any landscape.

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About The Author:

Rupert Foxton-Smythe

Horticulturist and avid plant enthusiast.

Rupert Foxton-Smythe is a seasoned horticulturist and avid plant enthusiast with over three decades of experience in the field of botany. As a leading expert at Houseplant Guru, Rupert brings a wealth of knowledge and a deep passion for all things green.

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