Sidalcea malviflora 'Oberon' (Dwarf Checkerbloom) — Perennial herb

Overview

Sidalcea malviflora 'Oberon' is a perennial herb in the genus Sidalcea, part of the Q156551 family. It typically grows around 0.8 m tall. Sidalcea malviflora 'Oberon' grows best in full sun, and tolerates most soils. Its UK hardiness is rated H7. Suggested uses include garden borders, wildflower gardens and naturalized areas. It is native to California and Oregon.

About

Sidalcea malviflora 'Oberon' is a perennial herb that bears clusters of pink, mallow-like flowers in summer. Plants reach about 0.8 metres and form an herbaceous clump from a woody base. It prefers full sun on soils ranging from sandy to clay that remain moist but are well drained. Flowering occurs from June to August.

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About the genus

Sidalcea is a genus of the botanical family Malvaceae. It contains several species of flowering plants known generally as checkerblooms or checkermallows, or prairie mallows in the United Kingdom. They can be annuals or perennials, some rhizomatous.

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In the garden

Sidalcea malviflora 'Oberon' is a perennial herb native to California and Oregon, valued for its summer display of pink mallow-type flowers. Individual plants reach roughly 0.8 metres and regenerate from a woody base, producing blooms between June and August. Plant in a sunny spot where soils stay moist but drain freely; this cultivar tolerates sandy, loamy and clay soils provided they are not waterlogged. It is fully hardy in the UK (H7) and corresponds to USDA zones 5–9, so it will remain in place through typical British winters without lifting. Give it full sun exposure to encourage the best flowering. Use Sidalcea malviflora 'Oberon' at the front or middle of a mixed border, in wildflower areas or naturalised swathes where a summer flush of pink is required. At about 0.8 m tall it sits well alongside lower perennials or grasses, and its defined summer flowering period — June to August — makes it straightforward to plan companion planting around fixed bloom times.

Growing conditions

Best soil and position for Sidalcea

Sunlight: Full sun
Soil type: Sandy, Loamy, Clay
Soil moisture: Moist but well-drained
Exposure: Full sun
UK hardiness: H7

Plant details

Sidalcea malviflora 'Oberon' size, habit and characteristics

Plant type: Perennial herb
Height: 0.8 m
Suggested uses: Garden borders, wildflower gardens, naturalized areas
Native to: California, Oregon

Care notes

Pruning and caring for Sidalcea malviflora 'Oberon'

Cultivation: Prefers well-drained soil; drought tolerant once established; avoid overwatering
Pruning: Deadhead spent flowers to encourage blooming; cut back after flowering to maintain shape
Propagation: Seed, division

Frequently asked questions

How do I grow Sidalcea malviflora 'Oberon'?

Prefers well-drained soil; drought tolerant once established; avoid overwatering.

Where is the best place to plant Sidalcea malviflora 'Oberon'?

Sidalcea malviflora 'Oberon' prefers full sun. It suits full sun positions.

What soil does Sidalcea malviflora 'Oberon' need?

Sidalcea malviflora 'Oberon' is adaptable and grows happily in most soil types, including sandy, loamy and clay. Aim for soil that stays moist but well-drained.

How do I prune Sidalcea malviflora 'Oberon'?

Deadhead spent flowers to encourage blooming; cut back after flowering to maintain shape.

How big does Sidalcea malviflora 'Oberon' grow?

Sidalcea malviflora 'Oberon' reaches a height of 0.8 m.

Is Sidalcea malviflora 'Oberon' hardy in the UK?

Sidalcea malviflora 'Oberon' has an RHS hardiness rating of H7, meaning it is fully hardy throughout the UK, tolerating temperatures below -20°C.

How do I propagate Sidalcea malviflora 'Oberon'?

Seed, division.

More in the Sidalcea genus

Browse all Sidalcea →