Spring Bulbs

SPRING BULBS

Bulbs can be used in nearly any garden or patio setting, giving you flowers, fragrance and brilliant colour with just a little effort. You will be amazed at what will grow from these little brown bulbs. Bigger is better when choosing tubers, corms or rhizomes. Energy for the initial spurt of Spring growth is stored in the bulb or tuber, so a larger bulb means more stored energy and a stronger, healthier plant.

PLANTING BULBS

Plant bulbs at the depth recommended on the label. A general rule is to plant bulbs at a depth three times the greater diameter of the bulb. Dig a hole and sprinkle fertilizer with a high middle number like bonemeal 2-14-0 in the bottom. Place the bulb in the hole with the pointed end up.
Cover the bulb with one inch of soil and water well. Fill in the rest of the hole with soil and water thoroughly. Do not water again until shoots begin to appear. A 5 cm layer of mulch on top of the bed will help prevent weeds and retain moisture. To improve clay-bearing soils, add sand, peat or compost to the top layer.

WATERING AND FEEDING

Keep the soil moist throughout the growing season. Use a recommended flower or bulb fertilizer, as well as bonemeal for continuous blooming.

WINTER CARE

Throughout the growing season, bulbs and tubers send manufactured food down into underground storage. This becomes stored energy for next yearís growth. In cold winter areas, spring bulbs must be dug up as winter approaches to save them for next year. Otherwise treat them as an annual. Discontinue watering two to three weeks before the first frost to encourage dormancy. Carefully dig up the bulbs after the first killing frost freezes the top growth. Be careful not to damage the bulb. Dry bulbs for a week in a dark, ventilated area. Dust with General Purpose Fungicide and store in an open paper bag or nylon stocking. Cover bulbs with dry peat moss or vermiculite so they do not touch one another. Bulbs are best stored at 10 to 15 oC.

 

 

Bulbs, Corms, Rhizomes, and Tubers

1

Bulbs are underground stems with soft, scaly layers surrounding a central bud. The scales store food and are attached to a basal plate (the bottom of the bulb where the roots come out). The central bud is the future flower.

 

2

Corms are swollen underground stems that store food for the plant during dormancy. Unlike bulbs- corms are solid and do not have scales or flesh-like leaves. Since they are solid, the bud, or growing tip, is on the top of the corm, instead of in the centre of the bulb’s scales.

 

3

Rhizomes are fast-growing underground stems that grow horizontally. Many plants that we consider invasive grow by rhizomes, though many are manageable.

 

4

Tubers are a type of swollen stem with a leathery exterior. Tubers have eyes, or growth nodes, from which the new plants grow. To propagate plants, all you need to do is lift the plant and cut off healthy pieces of tuber, each with about three eyes on it.

Storage

GLADIOLUS CORMS

Allow leaves to wither naturally for 6 to 8 weeks after blooming before digging. Remove tops close to the corm. Leave to dry for one day.  Store newly formed corm and cormlets in open boxes of peat in a cool space for winter.

DAHLIA TUBERS

After first killing frosts, dig up tubers.Remove extra soil and broken roots, and stand upside down for one week to dry. Store in a dry,cool area in peat moss.

CALLA LILIES

Tubers can be dug when all the leaves have yellowed and dried in September. If in pots,gradually decrease watering as leaves yellow and die. Lay pot on side in a cool place, allowing it to dry fully.

FREESIA

When blooming period is over, continue to fertilize and water to build storage for next year.As foliage yellows, gradually reduce watering.Store dry corms in a cool, dry basement. Dust with bulb fungicide/miticide.

RANUNCULUS

Before heavy frost after foliage has died naturally, dig up corms. Store in a dry, cool location until spring.

ACIDANTHERA AND MONTBRETIA

In fall, lift plants before heavy frost. Let dry in open air. Store plants in boxes or flats in a dry, cool place until April.

GLADIOLUS

Superb as cut flowers and effective in the border, gladiolus blooms start to open from the bottom of the spike upwards. A full two weeks of continuous colour can be obtained from one plant alone.  Planting can begin as soon as tree leaves unfold in the garden. Continuous bloom can be achieved from mid-summer until fall by making several plantings at two week intervals up to mid-June, or by planting a choice of cultivars that bloom very early to very late.  Very early 65 to 70 days from planting.

Early – 70 to 75 day
Early Medium – 75 to 80 days
Medium – 80 to 85 days
Late Medium – 85 to 90 days
Late – 90 to 100 days
Very Late- 100 to 105 days

CANNA LILY

Dig up rhrizome with some soil after tops are killed outdoors by the frost. Clean the rhizomes and store in barely moist peat moss in a cool location.

BEGONIA TUBERS

Lift plants in late October; allow foliage to die-down, then remove stems. Store tubers in dry peat moss in a cool basement.

IRIS

Dig up to divide and replant in compost-rich soil every three to five years for better blooms.

CALADIUMS

Require four months of good growing conditions to store food in the tuber for next year’s growth. In fall, dry out plants and store ina warm area until spring.

LILIES

Leave undisturbed as long as blooming is satisfactory. Spent blooms should be removed and flower stem gradually cut back. Keep fertilizing to ensure good bulb formation for next year. Replant if blooming becomes poor.  Remove and plant bulb lets (small bulbs) in rich, well-drained soil. Some species will spread naturally.

ANEMONES DE CAENAND ST. BRIGIDS

Before heavy frost, dig up corms. Dry in well-aerated place. Store in dry, cool location.

 

 

Name & Type

Height (cm)

Planting Depth

Comments

Amemones (Corm)

12.5-20

5

Soak tubers overnight before planting. Old leaf scarsmark the top. Very colourful.

Begonias (Tuber)

30-45

5-7.5

Available in many colours. Use in shady spots andhanging baskets. Plant cupped side up.

Caladiums (Tuber)

30-60

5-7.5

Beautiful foliage for shady areas. Old stem scars markthe top. Too much nitrogen causes loss of colour,

Calla Lilies

60-90

5-7.5

Elegant white flower on 15 cm spike.

Cannas (Rhizome)

45-120

7.5-10

Large and dwarf varieties. Many of these naturalizewell and come back as perennials.

Dahlias (Tuber)

30-90

5-7.5

Many different colours and flower types. Handletubers with care. Dig after killing frost and store.

Elephant Ears (Tuber)

90-180

12.5-15

Huge green leaves give a tropical look. Biggerbulbs make bigger plants and leaves.

Gladiolus (Corm)

120-180

7.5-10

Flowering spikes in many colours. May need stakingor wind protection. Dig 6 to 8 weeks after flowering.

Lilies (Bulb)

75-135

10-12.5

Perennial favourites in a broad range of colours.

Ranunculus

12.5-17.5

5-7.5

Beautiful assortment of colours. Plant with fingerspointing down.

 

March 01, 2021 — Domenic Crupi

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