• Photo of Cytisus scoparius (Cytisus scopariuss)

Plant Profile: Cytisus scoparius

Taxonomy: Cytisus scoparius

Names

Scotch Broom, Scottish Broom

  • Photo of Cytisus scoparius (Cytisus scopariuss)

Phonetic Spelling:sy-TIS-us sko-PAIR-ee-us

Genus:Cytisus

Species:scoparius

Family:Fabaceae

This rapidly growing shrub is both drought and salt tolerant, featuring a broom-like appearance. While it can be heavily pruned if it becomes overgrown, it's important to avoid cutting into the oldest stems. This plant is effective for controlling erosion on slopes.

In terms of pests and diseases, it generally faces no significant insect issues but is vulnerable to leaf and stem blight. Although it has a short lifespan, it often reseeds itself, which can lead to it becoming weedy and outcompeting native species. If you wish to manage its growth, it's best to remove unwanted plants before they flower and produce seeds. There are also some cultivars available that do not produce seeds.

Identification Tips:

This deciduous shrub can reach heights of up to 6.5 feet, with an arching and broadly rounded shape.

It flowers from late spring to early summer, prized for its blooms that last one to two weeks. After flowering, it may appear as dead, arching twigs, with leaves typically falling off by mid-June. Its stems are more grooved and twisted compared to C. X praecox, and it usually blooms later and grows larger. Additionally, there are pink and crimson varieties available.

This shrub is adaptable to poor soil conditions and shade, grows quickly, and is relatively free from pests.

Cytisus scoparius Feature Summary

Cytisus scoparius Image Gallery

Tags

#deciduous
#poisonous
#drought tolerant
#weedy
#salt tolerant
#erosion control
#fast growing

Similar Plants

Cytisus scoparius is often confused with:

Cytisus scoparius Feature Summary

Fruit
Fruit is a flattened pea-like green pod with hairy margins. A legume, hairy along the margins, 2".
Flowers
1 in. glowing, golden yellow sweet pea shaped flowers in late spring on old wood. Some cultivars have red, pink, or gold flowers. Rich yellow, pea-like, axillary, 1/2-3/4" dia.
Pink
Gold/Yellow
Red/Burgundy
1-3 inches
Leaves
Alternate, trifoliate, bright to medium green leaves; non-showy fall color. Alternate, trifoliolate; leaflets obovate or lanceolate, ca 1/4"; upper leaves missing 2 leaflets.
Compound (Pinnately , Bipinnately, Palmately)
Lanceolate
Obovate
Stem
Slender 4-angled grass-green erect stems. Slender, green, ridged and twisted; older stems brownish.
Poisonous to Humans
HIGHLY TOXIC, MAY BE FATAL IF EATEN! Vomiting, excitement, muscular weakness, convulsions.
Quinolizidine alkaloids
Seeds
Leaves
Stems
Whole Plant Traits
Shrub
Poisonous
Arching
Erect
Open
Cultural Conditions
Full sun (6 or more hours of direct sunlight a day)
Good Drainage
Landscape
Drought
Salt
Dry Soil
Poor Soil
Poisonous to Humans

Cytisus scoparius Attributes

Cytisus scoparius: Country Or Region Of Origin

Europe

Cytisus scoparius: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Cytisus scoparius Fruit

Cytisus scoparius: Fruit Description

Fruit is a flattened pea-like green pod with hairy margins. A legume, hairy along the margins, 2".

Cytisus scoparius: Fruit Type

Achene
Aggregate
Berry
Capsule
Caryopsis
Drupe
Follicle
Legume
Nut
Pome
Samara
Schizocarp
Siliqua

Cytisus scoparius: Fruit Color

grass
Green

Cytisus scoparius Flowers

Cytisus scoparius: Flower Description

1 in. glowing, golden yellow sweet pea shaped flowers in late spring on old wood. Some cultivars have red, pink, or gold flowers. Rich yellow, pea-like, axillary, 1/2-3/4" dia.

Cytisus scoparius: Flower Color

filter_vintage
Gold/Yellow
filter_vintage
Pink
filter_vintage
Red/Burgundy

Cytisus scoparius: Flower Bloom Time

Winter
Spring
Summer
Fall

Cytisus scoparius: Flower Size

1-3 inches
3-6 inches
< 1 inch
> 6 inches

Cytisus scoparius Leaves

Cytisus scoparius: Leaf Description

Alternate, trifoliate, bright to medium green leaves; non-showy fall color. Alternate, trifoliolate; leaflets obovate or lanceolate, ca 1/4"; upper leaves missing 2 leaflets.

Cytisus scoparius: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Cytisus scoparius: Leaf Color

spa
Green

Cytisus scoparius: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Cytisus scoparius: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Cytisus scoparius: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Cytisus scoparius: Hairs Present

No
Yes

Cytisus scoparius Stem

Cytisus scoparius: Stem Description

Slender 4-angled grass-green erect stems. Slender, green, ridged and twisted; older stems brownish.

Cytisus scoparius: Stem Is Aromatic

No
Yes

Cytisus scoparius Poisonous to Humans

Cytisus scoparius: Poison Symptoms

HIGHLY TOXIC, MAY BE FATAL IF EATEN! Vomiting, excitement, muscular weakness, convulsions.

Cytisus scoparius: Poison Toxic Principle

Quinolizidine alkaloids

Cytisus scoparius: Poison Severity

High
Low
Medium

Cytisus scoparius: Causes Contact Dermatitis

No
Yes

Cytisus scoparius: Poison Part

Bark
Flowers
Fruits
Leaves
Roots
Sap/Juice
Seeds
Stems

Cytisus scoparius Whole Plant Traits

Cytisus scoparius: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Cytisus scoparius: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Cytisus scoparius: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Cytisus scoparius: Texture

Fine
Medium
Coarse

Cytisus scoparius Cultural Conditions

Cytisus scoparius: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Cytisus scoparius: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Cytisus scoparius: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Cytisus scoparius: USDA Plant Hardiness Zone

thermostat
5a
thermostat
5b
thermostat
6a
thermostat
6b
thermostat
7a
thermostat
7b
thermostat
8a
thermostat
8b

Cytisus scoparius: Soil Texture

Clay
High Organic Matter
Loam (Silt)
Sand
Shallow Rocky

Cytisus scoparius Landscape

Cytisus scoparius: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Cytisus scoparius: Problems

Allelopathic
Contact Dermatitis
Frequent Disease Problems
Frequent Insect Problems
Invasive Species
Malodorous
Messy
Poisonous to Humans
Problem for Cats
Problem for Children
Problem for Dogs
Problem for Horses
Short-lived
Spines/Thorns
Weak Wood
Weedy