Smallflower Lotus Plant Care

Acmispon micranthus (Torr. & A.Gray) Brouillet

Updated · Sources · How we source care data

Acmispon micranthus is a species of legume native to California and northwestern Mexico. It is known by the common name San Diego bird's-foot trefoil.

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Water

Every 7–14 days

Light

Full sun to partial shade

Temp

50–85°F

Humidity

30–60%

At a glance

How do you care for Smallflower Lotus?

Plant Smallflower Lotus in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–14 days until it is established. It tolerates temperatures of 50–85°F (10–29°C). Fertilize it every 6 months during the growing season.

Where Is the Smallflower Lotus Native To?

Native range2 countries

What Is the Smallflower Lotus?

Smallflower Lotus (Acmispon micranthus) belongs to the Fabaceae family within the Acmispon genus. Smallflower Lotus is native to California and northwestern Mexico. Smallflower Lotus is also known as Deerweed.

Smallflower Lotus displays a low spreading shrub growth habit, reaching up to 1.5 ft tall with a spread of approximately 3 ft. Smallflower Lotus produces small yellow flowers in clusters.

Leaf size: approximately 2 inches.

How Often Should You Water a Smallflower Lotus?

Water a young or newly planted Smallflower Lotus every 7–14 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 7–14 days

Until established; then in dry spells

What Light Does the Smallflower Lotus Need?

Smallflower Lotus thrives in full sun to partial shade.

Light Requirement

Full sun to partial shade

What Temperature and Humidity Does the Smallflower Lotus Prefer?

Acmispon micranthus tolerates temperatures of 50–85°F. Smallflower Lotus prefers humidity levels of 30–60%.

Temperature

50–85°F

Humidity

30–60%

What Soil Mix Works Best for a Smallflower Lotus?

Well-draining sandy soil with good organic content. Good drainage is essential for Smallflower Lotus to prevent waterlogging, which leads to root rot and fungal issues.

How Often Should You Fertilize a Smallflower Lotus?

Feed Smallflower Lotus every 6 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 6 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 Smallflower Lotus?

Choose a spot with full sun to partial shade and well-draining sandy soil with good organic content. Avoid low spots where water collects after rain.

Smallflower Lotus is suited to USDA Zone 12a.

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 Smallflower Lotus?

Smallflower Lotus can spread to about 3 ft (0.9 m) and reach about 2 ft (0 m) tall. Space plants about 3 ft (0.9 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 Smallflower Lotus?

Prune Smallflower Lotus 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 Smallflower Lotus in Winter?

Smallflower Lotus is frost-tender (hardy to USDA zone 12). 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 Smallflower Lotus?

Smallflower Lotus can be propagated through seeds, division. Similar propagation techniques also apply to american bird's-foot trefoil plant care, which shares the same genus.

Is the Smallflower Lotus Toxic to Pets and Children?

Pet safety not verified

The ASPCA does not list Smallflower Lotus, 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 Smallflower Lotus?

Smallflower Lotus is susceptible to aphids, whiteflies, spider mites. 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 Smallflower Lotus Need?

Smallflower Lotus grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Smallflower Lotus is native to California and northwestern Mexico. In cooler regions, grow Smallflower Lotus as a houseplant or bring it indoors before the first frost.

Hardiness Zone

Zone 12a

Keep exploring plants

Smallflower Lotus 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 Acmispon genus — compare its care with other Acmispon species on PlantoScan.

Acmispon is part of the Fabaceae plant family — browse all Fabaceae genera and species.

Smallflower Lotus thrives in bright light and direct sun — see other bright-light plants.

More Acmispon Species

Other Acmispon species in PlantoScan's care catalogue share similar watering, light, and soil preferences:

Sources

  • Scientific name & taxonomy: Acmispon micranthus (Torr. & A.Gray) Brouillet, family Fabaceae (first published in J. Bot. Res. Inst. Texas 2: 391 (2008)) — World Flora Online record, IPNI name record.
  • Pet toxicity: Pet safety not verified: the ASPCA does not list Smallflower Lotus, 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 12a, 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.

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