Rhamnus californica 'Mound San Bruno' (Frangula c.)
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Mound San Bruno Coffeeberry
Mound San Bruno Coffeeberry
Rhamnus californica 'Mound San Bruno' (Frangula c.)
Rhamnus californica 'Mound San Bruno' (Frangula c.) is a fast-growing evergreen California native shrub that is more garden tolerant than other native Coffeeberry varieties. Smaller than the ‘Eve Case’, this compact, mounding evergreen shrub has inconspicuous cream-colored flowers. Large, showy berries, resembling the fruit of the coffee plant, begin to develop in summer, maturing from green to red to black in color - a good food source for backyard birds. Not as hardy as ‘Eve Case’ but grows well in coastal gardens as a border or accent plant.
Mound San Bruno Coffeeberry is a hardy, low-maintenance native shrub that thrives in various conditions. Here’s a guide to help you get started:
Choose the Right Location
- Sunlight: Mound San Bruno Coffeeberry is quite adaptable to different light conditions. It can thrive in full sun, partial shade, or even full shade, though it will be bushier and produce more berries in sunnier locations.
- Climate: This plant is native to California and is well-suited to Mediterranean climates (USDA Zones 7-10). It is drought-tolerant once established, making it an excellent choice for water-wise gardens.
Prepare the Soil
- Well-draining Soil: This coffeeberry variety prefers well-draining soil but can tolerate a range of soil types, including sandy, loamy, or clay soils. It’s not overly fussy about soil pH but will do best in slightly acidic to neutral conditions.
- Soil Amendments: If the soil is heavy clay or doesn’t drain well, consider amending it with compost or organic matter to improve drainage.
Planting Process
- Dig a Hole: Dig a hole that is about twice as wide and the same depth as the root ball. This will allow the roots to spread easily.
- Place the Plant: Remove the Mound San Bruno Coffeeberry from its container and gently loosen the roots. Place it in the hole, ensuring the top of the root ball is level with or slightly above the surrounding soil.
- Backfill and Water: Fill the hole with soil, pressing it down gently to remove any air pockets. Water thoroughly to help settle the soil around the roots.
Mulching
- Apply Mulch: Add a layer of mulch (such as wood chips or bark) around the base of the plant to help retain moisture, suppress weeds, and regulate soil temperature. Keep the mulch a few inches away from the stem to prevent rot.
Watering
- Regular Watering Until Established: Water the plant deeply and regularly during its first growing season to help establish a strong root system. This means once a week or more often during hot, dry spells.
- Drought-Tolerant Once Established: Once established, Mound San Bruno Coffeeberry is drought-tolerant and will need less frequent watering. However, during prolonged dry periods, occasional deep watering will help it stay healthy and lush.
Pruning and Maintenance
- Pruning for Shape: This variety of coffeeberry has a naturally mounding and compact form, but you can prune it lightly after it flowers to maintain its shape and encourage denser growth.
- Remove Dead or Damaged Branches: Regularly inspect the plant for any dead or damaged branches and remove them to keep the shrub healthy.
- Minimal Fertilization: Generally, this plant doesn’t need much fertilization. If desired, a light application of an all-purpose, balanced fertilizer in the spring will suffice, but it’s often unnecessary if the soil is healthy.
Here are some of the key benefits that make this plant popular among homeowners:
Attractive Year-Round Foliage
- Evergreen Shrub: Mound San Bruno Coffeeberry maintains its lush, green foliage throughout the year, providing consistent color and structure to the garden. The leaves are glossy, dark green, and often have a reddish tint when new, adding to the visual appeal.
- Compact, Mounding Form: It has a naturally dense, rounded shape, making it a great choice for ground cover, hedges, or filling garden beds.
Adaptability and Low Maintenance
- Tolerant of Various Conditions: This plant is highly adaptable to different growing conditions, thriving in full sun, partial shade, or even full shade. It can also handle a range of soil types, from sandy soils to clay, as long as there is good drainage.
- Drought-Tolerant: Once established, Mound San Bruno Coffeeberry is very drought-tolerant, which makes it a great option for water-wise or xeriscape gardens. This feature is particularly valued in areas with dry, Mediterranean climates or during times of water restrictions.
- Minimal Care Required: It does not need frequent pruning, fertilization, or other intensive care, making it easy for gardeners to maintain.
Versatility in Landscaping
- Ground Cover and Erosion Control: The dense, spreading habit of this plant makes it ideal for use as a ground cover, especially on slopes or hillsides where it can help control erosion. Its roots stabilize the soil, making it a practical choice for problematic areas.
- Low Hedge or Border Planting: It can be used as a low-growing hedge or border, either on its own or in combination with other plants. Its compact form means it won’t grow too tall, making it easy to integrate into various garden designs.
- Naturalistic and Native Gardens: The Mound San Bruno Coffeeberry fits seamlessly into naturalistic, native, and drought-tolerant garden designs. It complements other California native plants like manzanitas, sages, and ceanothus.
Deer Resistance
- Less Appealing to Deer: While no plant is entirely deer-proof, Mound San Bruno Coffeeberry is generally less appealing to deer. This makes it a suitable option for gardens where deer browsing is a concern.
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