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Cytisus scoparius

Common broom

Common names: Broom

At a glance

Light
Full sun
Hardiness
Hardy
Pruning
Jun–Jul
Flowering
May–Jun
Origin
Native to Germany
Common broom

Photo: Willow · CC BY 2.5 · Source

This description was machine-translated.

Description

The common broom (Cytisus scoparius) is a summer‑green shrub with spiny, dark green shoots and bright yellow butterfly‑shaped flowers. It blooms in May and June, when the branches are densely covered with blossoms. It prefers lean, well‑drained soils and thrives on sandy, nutrient‑poor sites. All parts of the plant, especially the seeds in the small pods, are toxic. Keep children and pets away from the ripe seeds and do not let children play with the pods.

Care instructions

Plant the common broom in a sunny, warm spot with lean to normal, well‑drained soil. It does not tolerate waterlogging; a sandy or gravelly substrate is best. Prune immediately after flowering to keep the shrub bushy; avoid cutting old wood as it rarely produces new growth. Once established, it tolerates dry summers without extra watering. Fertilize sparingly, as excess nutrients lead to soft, frost‑sensitive growth.

The care notes were machine-translated from German.

Garden year

FloweringMay–Jun

Soil & site

Soil pH

4.0pH 5–6.58.0

Soil type

well-drained, lean, sandy, dry

LightFull sun
Hours of sunat least 6 h a day
HardinessHardy

Common broom loves lean, well-drained soils and tolerates drought surprisingly well. It avoids heavy, waterlogged soils, because the roots rot there quickly. Low-lime, slightly acidic soils suit it best, and a sunny spot with sandy ground is ideal.

Feeding

Light feeder

As an undemanding deep-rooted plant, common broom needs no extra feeding. Soil that is too nutrient-rich makes it prone to frost damage and makes it grow loosely. A thin mulch layer of brushwood is perfectly enough to protect the soil from drying out in summer.

Pruning

MonthsJun–Jul
SeasonSummer (after harvest)
Pruning typeMaintenance pruning

Cut common broom back straight after flowering so that it stays compact and dense. You should not cut into old, leafless wood, as it usually no longer sprouts from there. Cutting back about a third of the young shoots is enough to prevent it from becoming leggy and woody with age.

Overwintering

Common broom is hardy and comes through most winters in Germany without protection. In particularly cold, wind-exposed positions it appreciates a light covering of brushwood in the first year after planting. Older plants no longer need winter protection.

Propagation

Methods

  • From seed
  • Cuttings

The easiest way to raise common broom from seed is in spring after a short cold period to stimulate germination. Semi-ripe cuttings in late summer root reliably in sandy substrate. Because the plant forms a taproot, it tolerates transplanting poorly, and specimens potted up young establish best.

Companion planting

Good neighbors

cabbage family (Brassicaceae)

particularly well established

Leguminous plants collect nitrogen in the soil, from which Brassicaceae benefit as heavy feeders.

For example White cabbageKohlrabiRadishKalebroccolicauliflower and 41 more species in the catalogue

Source: classic companion planting (DACH-Gartenpraxis)

carrot family (Apiaceae)

Peas and beans provide carrot and celery with nitrogen and grow as shallow-rooted plants without competition next to each other.

For example CarrotCeleriacDillParsleyFlorence fennelCoriander and 21 more species in the catalogue

Source: classic companion planting (DACH-Gartenpraxis)

gourd family (Cucurbitaceae)

Beans and peas enrich the soil with nitrogen, which cucurbits, as heavy feeders, can make good use of.

For example CucumberPumpkinCourgettePickling cucumberButternutHokkaido and 15 more species in the catalogue

Source: classic companion planting (DACH-Gartenpraxis)

Rather not

amaryllis family (Amaryllidaceae)

particularly well established

Allium species inhibit the nitrogen‑fixing rhizobia of legumes through their root exudates, which slows their growth.

For example GarlicOnionLeekChivesWild daffodilRocambole and 12 more species in the catalogue

Source: basic crop‑rotation rule

Companion planting is partly traditional gardening lore. Where the reason is known, it is given.

Some of these explanations were machine-translated.

For your garden

Grow Common broom yourself

Gartenkern tells you when frost is coming, when to sow and when to harvest, for your location.

Notes from real gardens

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