Sophora microphylla Sun King
Sophora microphylla Sun King
Sophora microphylla Sun King
Sophora microphylla Sun King
Sophora microphylla Sun King
Sophora microphylla SUN KING ('Hilsop')
Kowhai
Plant (or should I say piece of wood) planted straight away, but it never took off. Definitely dead! So, the promise of flowers is not kept.
Enzo, 18/06/2025
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Description
The Sophora microphylla Sun King, also known as 'Hilsop', is a bush with a spreading habit. It is a very popular variety that surprises with its early flowering. The flowers are grouped in upright clusters measuring 3 to 5 cm (1 to 2 in) long between March and May. These large flowers are dark yellow, bell-shaped, slightly curved, and pendulous. The flowering period is long-lasting. The fruit of the Sophora microphylla is a brown pod that resembles a rosary with about ten seeds.
The foliage is decorative and more evergreen than the typical variety. It consists of delicate, small pinnate leaves (divided into leaflets) that are velvety at the growth. They measure 7 to 15 cm (3 to 6in) long and bright green. The Sophora Sun King is a smaller variety with a mature height of 3 m (10ft).
Originally from Chile and New Zealand, Sophora is the national flower of the latter. It is also known as Small-flowered Kowhai, with Kowhai meaning "yellow" in Maori in New Zealand. It is a very hardy plant that withstands drought and winds well. The sophora microphylla can be found in hills, mountains, and rocky slopes, as well as in valleys and dry woodlands. However, it is best to cultivate it in pots in a temperate zone, isolated. It is a tree for small gardens. Be careful of the alkaloids in this plant that make it toxic.
Sophora microphylla Sun King in pictures
Plant habit
Flowering
Foliage
Botanical data
Sophora
microphylla
SUN KING ('Hilsop')
Fabaceae
Kowhai
Cultivar or hybrid
Planting and care
To successfully grow the Sophora microphylla Sun King plant, put it in a sunny spot with well-drained soil that stays moist. This plant can withstand cold winds and occasional droughts, making it easy to care for. In the first year, generously water it to encourage rooting. If necessary, trim it after it flowers. The Kohwai plant is vigorous against diseases. The Sophora microphylla Sun King should be planted in a sunny spot, in moist but well-drained soil. It is a plant that withstands cold winds and possible droughts relatively well. It is easy to cultivate. To promote its rooting, water generously during the first year. Carry out pruning after flowering if necessary. The Kohwai is resistant to diseases.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
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