7 exceptional summer flowering bulbs
Our selection of summer bulbous plants with remarkable flowering
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Summer plants bring the garden to life under the sun. Among them, certain exceptional summer bulbs allow passionate gardeners to create a unique plant display with stunning flowerings. Some are true rarities, while others are selected varieties, adorned with vibrant colours or uniquely shaped flowers.
We invite you to discover our selection of 7 exceptional summer bulbs without further delay.
Crinum asiaticum - Asian Crinum
Originating from the tropical regions of Asia, Crinum asiaticum, also known as Asian Crinum or Spider Lily, is an impressive bulbous plant from the Liliaceae family. It originates from a very large cylindrical bulb measuring 10 to 15 cm in diameter and weighing over 5 kg, with deep roots. Its evergreen foliage consists of broad, ribbon-like, thick leaves shaped like gutters, ranging from 60 cm to over 1 m in length, forming a clump over 1.5 m tall and 80 cm wide. From June to August, and also repeatedly throughout the year in warm conditions, it bears 15 to 50 white flowers with a distinctly exotic appearance, delicately scented with vanilla and spices, opening one after another. They have a shape of finely cut open cup corollas—hence the name Spider Lily—with pink-purple stamens standing out against their immaculate whiteness.
This very beautiful plant retains its foliage in regions spared from frost, prefers warm, humid climates with dry winters, fresh soil, and sunny exposure. Perfectly tolerant of sea spray and saline soils, Crinum is ideal for seaside gardens. If you cannot provide the temperature conditions it requires, grow it in a pot, which you should winter at temperatures between 8 and 10 °C to respect its dormancy period.
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7 Rare TreesCanna 'Cleopatra' - Yellow and Red Variegated Canna
Proposed exclusively at Promesse de Fleurs, the Canna (x) generalis ‘Cleopatra’ is a large perennial with thick, fleshy rhizomes producing generous, deciduous foliage with rapid growth. This collection Canna is a surprising variety, producing variable flowers on the same floral stem, differently variegated in yellow, orange, and red. Some of these flowers are, in contrast, solid, a beautiful deep red. Some leaves of its lush green foliage display chocolate-brown hues: a dazzling wonder with an exotic appearance!
Hardy down to -6.5 °C (Zone 9a), like other Cannas, ‘Cleopatra’ will appreciate rich, moist, well-drained soil and a sunny location for generous flowering. If your climate does not allow for planting in the garden, place it in a container or pot with 1/3 good potting mix combined with 2/3 garden soil. Remember to water it abundantly and cut the foliage back to the ground before winter, a period it will spend covered with a good protective mulch.
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Calanthe reflexa - Perennial Orchid
A beautiful rarity, this terrestrial orchid! Semi-hardy (down to -9.5 °C), the Calanthe reflexa is derived from pseudobulbs from which emerge each spring lovely clumps of long, bright green leaves, with a height of 40 cm and a spread of 30 cm. In mid-summer, floral spikes develop, composed of refined, pearly white flowers tinged with pink and a pink and white lip. The icing on the cake is that these delicate flowers are subtly fragrant.
Native to the Japanese mountains, this magnificent orchid loves warmth and brightness while avoiding direct sunlight. Plant it in the ground or in a pot, in a cool, acidic substrate rich in humus, even in summer. It will then quickly form beautiful clumps and reward you with its stunning flowering in about 3 years!
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8 shrubs with extraordinary flowersOriental Lily 'Magic Star' - Double Oriental Lily
Tender, generous, and vibrant, the double Oriental Lily Lilium ‘Magic Star’ is a new variety that stands out for its large, absolutely stunning double flowers. On a pure white base, they are spotted with soft pink and marked with a brighter pink. The flower stems of this wonderful lily are straight and sturdy, perfect for bouquets that will beautifully fragrance the atmosphere in summer!
Plant the bulbs of this exceptional Lily in full sun or partial shade, in soil rich in humus, non-calcareous, and well-drained. The plant will reach 90 cm in height when in flower and the clump will spread through the multiplication of bulbets for stunning floral displays.
Hymenocallis longipetala - White Ismene
The flowering of this white Ismene, Hymenocallis longipetala is truly beautiful! Also known as Spider Lily or Sea Daffodil, this bulbous plant native to Central America develops large clumps of dark green lanceolate leaves, from which emerge in June-July floral spikes bearing large, intricately shaped and exceptionally fragrant white flowers; their long petals extend from well-opened calyxes with long, slender golden-yellow stamens.
Plant the bulbs of this surprising plant in light, rather poor, and lime-free soil. It will appreciate full sun, but will not withstand winter: protect it from the cold as soon as temperatures drop, and bring it back out in the following spring.
Gloriosa rothschildiana - Glorious lily
An original and fast-growing climbing bulb that will reward you with its exceptional summer flowering: the glorious lily Gloriosa rothschildiana. This beautiful voluble plant quickly clings to anything within reach of its tendrils, focusing on its flowering as soon as the warm season arrives! The flowers, large and very elegant, resembling lily flowers, start off yellow-green, then unfold into increasingly vibrant colours: yellow, orange, and bright red! You will love the Gloriosa for its lightness, graphic form, and shimmering hues.
As it is a frost-sensitive plant, it is best to install it in a large pot, which you can bring indoors in autumn, when it enters dormancy. You can also plant it in the ground after the last frosts, in a sheltered and sunny spot, in fresh soil. In this case, remember to dig it up and store the bulbs in a pot or tray, covered with turf.
Habenaria radiata - Dove Orchid
Get close to the soil to admire this incomparable rare plant known by the poetic name of Dove Orchid: the Habenaria radiata. Native to Japan, this terrestrial orchid is a poem in itself. Imitating a flight of doves, its tiny immaculate flowers are incredibly delicate and feature a cut and spread silhouette reminiscent of bird wings. Very fine, the flowering of Habenaria radiata is also subtly fragrant.
You will have understood, this orchid is rare and is suited for gardeners who can care for it and provide optimal growing conditions: its tiny tubercles need to be planted in a pot, in a mix of light potting soil, sand, and gravel. It is not tropical, and its optimal temperature range is between 12 and 16 °C. By giving it plenty of attention, you will see it produce its graceful flowering in summer for about four weeks!
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