Buddleja glomerata Silver Service - Butterfly Bush
Buddleja glomerata Silver Service - Butterfly Bush
Buddleja glomerata Silver Service - Butterfly Bush
Buddleja glomerata Silver Service
Butterfly Bush
Pretty little bush, surprising with the colour of its foliage. Minimal flowering for this first year, normal. The heatwave, even though it was in a pot this summer, didn't affect it too much. But it really appreciated being planted in October and the few drops, at least, of our Toulouse autumn in 2022.
MD, 19/11/2022
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Description
Buddleja glomerata 'Silver Service' deserves a place in gardens affected by recurrent summer droughts. Still little known, this extremely bright plant is a beautiful descendant of a remarkable evergreen South African buddleja, adorned with beautifully carved and undulated leaves in white-silver, and soft yellow panicles at the end of spring. The bush thrives in the sun, in open ground in favourable climates, or in a large pot to overwinter in cold regions.
Buddleja glomerata, from the large Scrophulariaceae family, is endemic to the mountainous areas of the Karoo desert in South Africa. This region is dominated by a semi-arid climate where it freezes in winter. Capable of withstanding short frosts of around -8° C (17.6° F) once established, this species appreciates well-drained soils and tolerates the presence of limestone in the soil. 'Silver Service', apparently derived from a subject found in a French garden, was named and propagated by Alan Lewis of Lees nursery in England. This beautiful plant was presented at the Plantarium in Boskoop, Netherlands in 2019.
Buddleja glomerata 'Silver Service', with medium to slow growth, will reach a height of about 1.5 m (4.9 ft) with a spread of 1.2 m (3.9 m). The entire plant is covered with a white-silver fuzz, indicating excellent adaptation to summer droughts. Its upright branches are adorned with oval or elliptical leaves, with strongly undulated lobes along the edges, measuring 1.5 cm to 8.5 cm (0.6 in to 3.3 in) long and 0.7 cm to 4 cm (0.3 in to 1.6 in) wide. When they emerge, their colour is a very light silver-grey, then they turn bluish with age and persist through winter. Flowering generally takes place in May-June, depending on the climate. In the terminal part of the stems, branched panicles of flowers form, measuring less than 15 cm (5.9 in) long. They are almost globular and particularly dense. Each small bouquet is composed of 10 to 20 tiny pale-yellow flowers, from which the stamens protrude, giving the whole a fluffy appearance. When the soil remains slightly moist in summer, this buddleja produces some additional flowers. Slightly fragrant, this flowering is sought after by pollinating insects: the flowers contain substances collected by pollinating insects that transform them into honey.
'Silver Service' will thrive in mild and sunny regions, spared from severe frosts. Unlike many classic buddleja varieties, this one will fully flourish in hot regions, which are very dry in summer. In borderline hardiness zones, it should be placed against a south-facing wall and sheltered from the wind for protection. More continental gardeners, fond of rare plants, can also adopt it in a large pot that they will protect from severe cold in winter. In the garden, in a flower bed or in a large rockery, this bright buddleja will complement the entire range of plants for dry climates: rockroses, lavenders, rosemary, Perovskia, myrtles, Leptospermum, silver bindweed Convolvulus cneorum, salvias, shrubby lavateras, or even coronillas, for example.
Buddleja glomerata Silver Service - Butterfly Bush in pictures
Plant habit
Flowering
Foliage
Botanical data
Buddleja
glomerata
Silver Service
Buddlejaceae (Scrophulariaceae)
Butterfly Bush
Cultivar or hybrid
Planting and care
'Silver Service' can be grown in open ground in sunny regions that experience mild winters. It is hardy to -8° C (17.6° F) (or -10° C (14° F) in dry soil) for a short period of time and when the bush has been established for several years. It requires a very sunny exposure and is not afraid of heat or severe summer droughts once it is well rooted (after 2 or 3 years of cultivation). Plant it in well-worked and well-drained soil, possibly adding gravel to the soil in your garden if it is heavy and clayey. It tolerates limestone well.
In pots: use a light and well-draining mixture (a mixture of garden soil, compost, sand, and gravel). Monitor watering and regularly provide fertiliser for flowering shrubs. Shelter your buddleja in winter, bring it indoors to a bright, unheated space where the temperature does not drop below -3° C (26.6 F). Reduce watering in winter. If necessary, prune just after flowering.
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).
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 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.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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