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Acmispon glaber
deerweed
Acmispon glaber
Acmispon glaber, commonly known as California broom, is a perennial herbaceous plant native to California and other parts of western North America. It is a low-growing plant, typically reaching heights of 1-3 feet. It features slender stems and small, trifoliate leaves. California broom produces small, yellow to orange pea-like flowers, which bloom from spring to summer. The plant is known for its ability to fix nitrogen in the soil, making it beneficial in certain garden settings.
CategoryDetails
Plant TypePerennial plant
Estimated Plant Lifespan5 years lifespan
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: Animal

Notes: California broom is primarily pollinated by insects, especially bees. The plant's flower structure and nectar production are designed to attract these pollinators, ensuring successful pollination.

Watering Requirements

Method: Deep watering

Frequency: Once or twice per week

Notes: Water deeply but infrequently, allowing the soil to dry out slightly between waterings. Avoid overwatering, which can lead to root rot.

Humidity Requirements

Level: Moderate

Maintenance: Generally does not require supplemental humidity. Ensure good air circulation.

Cleaning RequirementsProvide well-draining soil and full sun exposure. Prune lightly after flowering to maintain shape and encourage bushier growth. California broom is drought-tolerant once established.
Temperature Range

Min: -7°C

Max: 35°C

Eschscholzia californica
California poppy
Eschscholzia californica
California poppies and California broom share similar growing conditions and can complement each other aesthetically with their contrasting flower colors and bloom times. The poppy's vibrant orange flowers will contrast nicely with the broom's yellow blooms and the plants have similar water requirements, promoting a harmonious and visually appealing garden bed.
Festuca rubra
red fescue
Festuca rubra
Red fescue is a low-maintenance, drought-tolerant grass that provides a textural contrast to the broom. It helps prevent soil erosion and can create a more balanced ecological environment.
Bromus diandrus
great brome
Bromus diandrus

Ripgut brome is a fast-growing grass that can outcompete California broom for resources such as sunlight, water, and nutrients, leading to reduced growth and flowering of the broom. Its aggressive nature makes it a significant threat to the broom's establishment and survival, as it readily colonizes disturbed areas.

Aphids

Aphids are small, soft-bodied insects that suck sap from plants. They can infest California broom, causing stunted growth, yellowing leaves, and the production of sticky honeydew. Infestations can weaken the plant and make it more susceptible to other pests and diseases.

Steps:

    • Collect seeds from mature seed pods in late summer or early fall.
    • Sow seeds directly into the ground or start them in pots with well-draining soil.
    • For cuttings, take stem cuttings in spring or early summer.
    • Dip the cut end in rooting hormone and plant in a rooting medium.

Neem Oil

Neem oil can be used to control aphids, a common pest of California broom. It works by disrupting the insect's hormones and feeding habits.

Compost

Adding compost to the soil improves soil structure and provides essential nutrients that support the plant's growth and health.