Rose 'Iceberg'

Questions about rose 'Iceberg'

Does rose 'Iceberg' need sun or shade?

Rose 'Iceberg' grows in full sun (6 or more hours of direct sun a day).

It wants ordinary well-drained soil, rich in organic matter, and a good soak in dry spells.

What zones does rose 'Iceberg' grow in?

USDA zones 5 to 9. It is hardy to zone 5, which means it survives winter nights down to about −10 °F (−23 °C).

Gardening in Canada? Use the USDA zone for your town: Canada's own zone map uses different numbers.

When does rose 'Iceberg' flower in my zone?

In zone 5 it flowers mid June to early October. As a summer flower it moves about half a week for every zone: earlier where it is warmer.

Worked out from Hopkins' bioclimatic law: spring arrives about four days later for each degree of latitude north, and one zone is roughly two degrees. A warm spring or a cold one moves any garden two weeks either way.

How far apart should rose 'Iceberg' be planted?

3 ft (90 cm) apart, from the middle of one plant to the middle of the next. That is a little closer than its full width of 3½ ft (100 cm), so a group knits into one patch.

It grows 4 ft (120 cm) tall. Give it the full distance from anything taller, or it will lean out towards the light.

How many rose 'Iceberg' plants do I need?

At 3 ft apart, set out in staggered rows:

• 1 to fill 10 square feet (about 1 m²)
• 4 for a single row 10 ft (3 m) long
• 4 to fill a 4 × 8 ft bed on its own

In a mixed border, plant it as one, planted singly: it is the bed's structure, and everything else is arranged around it.

In the bed above, the planner used one in one group.

Is rose 'Iceberg' poisonous to dogs and cats?

No toxicity is recorded for dogs, cats, horses or people, according to the ASPCA.

"Not toxic" is not "edible": a pet that eats a lot of any plant can be sick.

Is there a native plant like rose 'Iceberg'?

Rose 'Iceberg' is not native to North America. These North American natives come closest to doing its job:

• Smooth hydrangea 'Invincibelle Spirit II': the same job in a bed, the same size and the same flowering time; pink, not white, wants moist soil.
• Ninebark 'Tiny Wine': the same job in a bed, the same size and the same colour; flowers late May to late June, fine leaves, not medium.

Matched the way the planner's Swap button matches plants: the same job in a bed, then size, then flowering time.

What flowers after rose 'Iceberg'?

Rose 'Iceberg' is over by early October. These start as it finishes and carry the same spot on, so it never goes flat:

• Chrysanthemum 'Sheffield Pink': from late September to early November, 2½ ft tall, to stand in front of it and cover its fading stems.
• Tatarian aster 'Jindai': from early October to early November, 4 ft tall.
• Japanese onion 'Ozawa': from early October to early November, 10 in tall, to stand in front of it and cover its fading stems.

What does rose 'Iceberg' look like in winter?

Rose 'Iceberg' drops its leaves and stands as bare branches. That is when to see its shape, and to prune it if it needs pruning.