Brewer's Milk Vetch Plant Care
Astragalus breweri A.Gray
Updated · Sources · How we source care data
Astragalus breweri is a species of milkvetch known by the common name Brewer's milkvetch. It is endemic to northern California, where it is found in several counties surrounding the north edge of the San Francisco Bay Area.
Every 7–10 days
Full sun to partial shade
60–80°F
40–60%
At a glance
How do you care for Brewer's Milk Vetch?
Plant Brewer's Milk Vetch in full sun to partial shade (USDA zones 13a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 60–80°F (16–27°C). Fertilize it every 8 months during the growing season.
What Is the Brewer's Milk Vetch?
Brewer's Milk Vetch (Astragalus breweri) belongs to the Fabaceae family within the Astragalus genus. Brewer's Milk Vetch is native to several counties surrounding the north edge of the San Francisco Bay Area.
Brewer's Milk Vetch displays a low spreading ground cover growth habit, reaching up to 0.5 ft tall with a spread of approximately 2 ft. Brewer's Milk Vetch produces small pea-like flowers in shades of purple, pink, or white.
Leaf size: approximately 1 inches.
How Often Should You Water a Brewer's Milk Vetch?
Water a young or newly planted Brewer's Milk Vetch every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.
Watering Frequency
Every 7–10 days
Until established; then in dry spells
What Light Does the Brewer's Milk Vetch Need?
Brewer's Milk Vetch thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Brewer's Milk Vetch Prefer?
Astragalus breweri tolerates temperatures of 60–80°F. Brewer's Milk Vetch prefers humidity levels of 40–60%.
Temperature
60–80°F
Humidity
40–60%
What Soil Mix Works Best for a Brewer's Milk Vetch?
Well-draining sandy soil mix with added perlite for extra drainage. Good drainage is essential for Brewer's Milk Vetch to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Brewer's Milk Vetch?
Feed Brewer's Milk Vetch every 8 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.
Stop feeding by late summer so new growth can harden before winter.
Fertilizing
Every 8 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
Where Should You Plant a Brewer's Milk Vetch?
Choose a spot with full sun to partial shade and well-draining sandy soil mix with added perlite for extra drainage. Avoid low spots where water collects after rain.
Brewer's Milk Vetch is suited to USDA Zone 13a.
Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.
How Far Apart Should You Plant a Brewer's Milk Vetch?
Brewer's Milk Vetch can spread to about 2 ft (0.6 m) and reach about 1 ft (0 m) tall. Space plants about 2 ft (0.6 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.
Planning a row or hedge? Try the plant spacing calculator.
How Do You Prune a Brewer's Milk Vetch?
Prune Brewer's Milk Vetch while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.
If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.
How Do You Care for a Brewer's Milk Vetch in Winter?
Brewer's Milk Vetch is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.
How Do You Propagate a Brewer's Milk Vetch?
Brewer's Milk Vetch can be propagated through seeds, division of root ball. Similar propagation techniques also apply to aragallus acutirostris plant care, which shares the same genus.
Is the Brewer's Milk Vetch Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Brewer's Milk Vetch, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Brewer's Milk Vetch?
Brewer's Milk Vetch is susceptible to aphids, spider mites, leafhoppers. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Brewer's Milk Vetch Need?
Brewer's Milk Vetch grows outdoors in USDA Zone 13a. It survives winters down to planting zone 13a. Brewer's Milk Vetch is native to several counties surrounding the north edge of the San Francisco Bay Area. In cooler regions, grow Brewer's Milk Vetch as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13a
Keep exploring plants
Brewer's Milk Vetch is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Astragalus genus — compare its care with other Astragalus species on PlantoScan.
Astragalus is part of the Fabaceae plant family — browse all Fabaceae genera and species.
Brewer's Milk Vetch thrives in bright light and direct sun — see other bright-light plants.
More Astragalus Species
Other Astragalus species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Astragalus breweri A.Gray, family Fabaceae — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Brewer's Milk Vetch, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
