ornamental onion bulbs
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Powerful rulers of the early summer garden with completely round, densely packed heads of purple on strong stems - and this Goliath repeat flowers too.
- Position: full sun
- Soil: fertile, well-drained soil
- Rate of growth: average
- Flowering period: July
- Hardiness: fully hardy
- Bulb size: 18/20
Largish spherical flowerheads made up of numerous star-shaped, deep violet flowers appear in summer. The enormous flowerheads, measuring up to 15cm, look great in pots or borders where they can be seen in their full glory. They are also perfect for a sunny border, dotted in groups among ornamental grasses, or as part of a Mediterranean scheme. Alliums look best planted between medium-sized herbaceous plants, which help to mask the strap-like leaves, which fade by the time the flowers appear.
- Garden care: Enrich the soil with added compost and plant the bulbs 15cm deep. Space them at 25cm intervals to take full advantage of the big flower heads. Make sure the soil does not get too wet or waterlogged, and divide large clumps in autumn or spring.
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Q:When is an ideal time to plant these bulbs pleaseAsked on 16/8/2015 by A gardener from bristol uk
Alliums can be planted in the autumn or early spring.
Hope this ehlpsAnswered on 21/8/2015 by Anonymous from crocus
Q:Allium 'Globemaster' planting
Please can you tell me if it is too late to plant the above bulbs at the end of November. Many thanks ValerieAsked on 27/11/2009 by Valerie
A:Hello Valerie, It is a little late, but if you get them in the ground as soon as possible you should not have any problems. You should enrich the soil with added compost and plant the bulbs 15cm deep. Space them at 25cm intervals to take full advantage of the big flower heads. Make sure the soil does not get too wet or waterlogged over winter. I hope this helps. Helen Plant DoctorAnswered on 30/11/2009 by Crocus Helpdesk
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