| Summer
Flowering Bulbs
Summer
flowering bulbs, corms and tubers can add colour and interest to
the garden at a time when most of the Spring
flowering plants have finished.
They can be used to add height to Summer flowering bedding plants,
used on their own in small groups or as a mass display. Growing
them in containers and hanging baskets
give good results. Many of the low-growing varieties are ideal for
rockeries and many of the taller growing types can be used as cut
flowers.
Planting
Bulbs
Good
soil preparation by digging to a depth of at least 23cm (9in)
will aid establishment and help keep the bulbs or corms well drained
and prevent the possibility of them rotting.
On heavy soils such as clay where drainage
may be poor, digging in sharp or grit sand to the planting area
and placing a little under each bulb, corm or tuber will help prevent
rotting.
Feeding
Feed
with a liquid fertiliser just as the
flowers are drying - this will build up reserves of plant food which
in turn will help form the flowers for next year's display.
Winter
Protection
Some
bulbs may require protection in Winter
in all but the most sheltered of gardens and therefore growing
in containers and overwintering in a greenhouse or conservatory
may be the best way to handle these.
With the exception of Gladioli and Dahlias, most can be left in
the soil over Winter to flower for many years.
For bulbs that need to be dug up after flowering wait until the
foliage has turned yellow and dried off naturally. Store in a dry,
frost and rodent free place over Winter then replant in the following
Spring.
By checking the information on the packaging the various characteristics
of the bulb, corm or tuber needs will be known.
Supporting
The
taller growing varieties, in paticular Gladioli, Lilies and Dahlias
will require short stakes, canes or supports to prevent damage to
their graceful flower spikes.
Bulb Planting Guide
Type of bulb |
Planting time |
Depth |
Spacing |
Allium |
early autumn |
5-7cm |
15-30cm |
Anemone |
early autumn |
5cm |
10cm |
Arum |
mid-summer |
15cm |
10cm |
Begonia |
spring |
2.5cm |
22-30cm |
Chionodoxa |
early autumn |
2.5-5cm |
7cm |
Colchicum |
late spring |
7cm |
10-15cm |
Crocus, spring |
late summer |
5-7cm |
10cm |
Crocus, autumn |
mid-summer |
5-7cm |
10cm |
Cyclamen |
late summer |
2.5cm |
15cm |
Eranthis |
late summer |
2.5-5cm |
10cm |
Erythronium |
late summer |
5-7cm |
10cm |
Fritillaria |
early autumn |
5-7cm |
15- 45cm |
Galanthus |
late summer |
7-10cm |
10cm |
Gladiolus |
mid-spring |
7-10cm |
10-15cm |
Hyacinthus |
early autumn |
10cm |
20cm |
Iris reticulata |
autumn |
7-10cm |
10cm |
Leucojum |
late summer |
7-10cm |
10-20cm |
Lilium |
mid-autumn |
10-15cm |
15-45cm |
Muscari |
late summer |
5-7cm |
10cm |
Narcissus |
late summer |
5-12cm |
10-20cm |
Nerine |
spring |
2.5cm |
15cm |
Ornathogalum |
mid-autumn |
5-7cm |
10-15cm |
Puschkinia |
early autumn |
5-7cm |
7cm |
Scilla |
late summer |
5-7cm |
5-10cm |
Sternbergia |
mid-summer |
7cm |
12cm |
Tigridia |
late spring |
5-7cm |
15cm |
Tulips |
late autumn |
7-15cm |
10-20cm |
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