Iceberg

Snow-white stunner ‘Iceberg’ is regarded as one of the finest cluster-flowered roses ever raised, and is certainly among the most popular. It produces a profusion of double white flowers in large trusses all summer.

ANNUAL CALENDAR

SPRING

March-April:

Finish planting bare-root roses. Prune established roses. Weed rose-beds. Feed with a rose fertilizer. Mulch (cover ground) with organic matter. Spray against fungal diseases if necessary.

SUMMER

June-August:

In flower. Deadhead (remove faded flowers), cutting back to a healthy bud. Spray against disease and greenfly. Remove suckers (basal shoots). Water in dry weather.

July:

Apply more rose fertilizer.

AUTUMN

September-October:

In flower until first frosts. November:

Prepare new rose-beds for planting. Weed rose-beds, and hoe in old mulching materials. Cut back long stems to reduce wind damage.

WINTER

December-February: ‘Iceberg’ is frost hardy, but in severe weather protect by earthing up (heaping soil around stem) or placing a layer of conifer branches around the bush. Continue planting unless soil is frosty or waterlogged.

PRUNING,

Prune in March. Remove, dead, diseased or spindly, growth, as well as crossing, branches. Prune moderately to give stems of various lengths, and bearing in mind the shape of the bush. Make cuts just above and sloping away from an outward-facing bud. Pmne standards (with a tree-like shape) so that all branches are a similar length

PLANTING COMPANIONS ‘Iceberg is suitable for a mixed border and will thrive as long as it has an open position with good air circulation. Under-plant it with silver-leaved perennials such as lamb’s ears {Stachys byzantina), or team it with deep purple lavender {Lavandula angustifoUa ‘Hidcote’) and yellow-green lady’s mantle (Alchcniilla mollis).

P ink-tinged buds open out into pure white, scented flowers which are ideal for cutting. ‘Iceberg’ matures into an attractively upright and bushy shape.

Versatile ‘Iceberg’ is good for bedding or container growing. Choose a pot large enough to give plenty of root run (40cm downwards) and place a layer of broken pots at the base for drainage. Use soil-based compost If your garden is large, grow ‘Iceberg’ where it has enough space to develop into a specimen bush. This reduces the risk of it becoming infected with black spot. Prune lightly so that it is covered in flowers.

Preparing the soil

To avoid rose replant disease, do not plant ‘Iceberg’ on a site where roses have already grown.

If this is unavoidable, change the soil completely to a depth of 60cm.

Remove perennial weeds such as couch grass. Dig and incorporate bulky organic matter. Dig a generous planting hole and break up the base with a fork.

Planting container-grown ‘Iceberg’

Plant container-grown roses at any time as long as the ground is not frozen or waterlogged.

Make sure that the container is well watered before planting.

Prune out diseased or damaged growth.

Place the bush in the hole so that the graft union (knobbly join between grafted variety and root- stock) is 2.5cm below soil level. Do not disturb the soil around the roots.

Planting bare-root ‘Iceberg’

Plant bare-root roses from late October to March.

Soak and prune as for container-grown roses.

Spread the roots outwards and downwards.

Fill in with a planting mixture (equal parts of soil and organic matter and a handful of bone meal).

Gently shake the plant and firm around the roots before treading in. Check the planting level.

Water if the soil is dry.

After planting, watch for wind-rock and uneven settling, firming the plant in as necessary.

BUYING

Buy ‘Iceberg’ with bare roots from a mail order nursery (despatched from October to March) or container-grown from a garden centre. Look for at least 3 sturdy stems thicker than a pencil. Wood should be firm, green and unwrinkled. There should be a well-developed, fibrous root system.

Iceberg

SITUATION

An open, sunny site. As a bedding rose, and as hedging planted 60-90cm apart. Makes an elegant shrub if given plenty of space and lightly pruned.

SOIL

Prefers an almost neutral soil (pH6.5), which is fertile and well drained. Tolerates poor soil, but not waterlogged conditions.

CARE

Prune moderately in spring. Weed, feed and mulch in spring, and deadhead (remove dead flower-heads) and feed again in summer. Protect from fungal diseases.

PLANT HEALTH

‘Iceberg’ is prone to black spot, so give it a preventive spray of systemic fungicide, repeated at intervals if necessary. It may also be affected by greenfly. Treat by spraying with horticultural soft soap or a suitable insecticide.

BUYING ‘Iceberg’ is found all over

Europe as well as Britain, called ‘Fee des Neiges’ in

France and ‘Schnee- wittchen’ in Germany.

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