Skip to main content

Agarita

Berberis trifoliolata

Last reviewed: October 2026

Berberis trifoliolata, commonly called agarita, is a spiny evergreen shrub with holly-like blue-green leaves that blooms small yellow flowers from March through May. It thrives in full sun on dry, rocky, well-drained sites and needs little water once established.

Agarita (Berberis trifoliolata)
Photo: no rights reserved

Toxicity unknown

Agarita (Berberis trifoliolata) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

low

Size

36"–72" H × 36"–72" W

Bloom

Mar, Apr, May

Native to

AZ, NM, TX

Pollinators

butterflies, bees, nectar insects

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 460 programs across 44 states, each with a link to the provider and the date we last checked it.

Find rebates in your area

Picture natives in your own yard

Upload a photo of your yard and Patch Vision shows a rendering of it planted with natives for your region, like Agarita.

Agarita is a sturdy native shrub with holly-like leaves and clusters of fragrant yellow flowers in spring. It produces red berries that are prized for jelly-making and attracts wildlife throughout the growing season.

Growing Agarita

Grow Agarita in full sun and low water. Mature plants reach 36 to 72 inches tall and spread 36 to 72 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

Get an email before your first frost

We'll email you a week before frost can first reach your ZIP. You also get a printable fall checklist with your dates right away.

You'll also get our weekly yard notes. Unsubscribe anytime.

How to care for Agarita, by region

How to care for Agarita where it is actually grown: year-round basics plus what to do each season, region by region, with the sources for each.

Care guidance last updated: September 2026

Enter your ZIP code and we will open the guidance for your region.

Cross Timbers (includes Fort Worth, TX)

Year-round

Agarita is a thorny, evergreen shrub that is native to this part of North Texas and needs very little care once it settles in. Its fragrant yellow late winter flowers are one of the first nectar sources for native bees each year.

  • Plant in full sun to light shade, spacing shrubs 4 to 6 feet apart since they spread into thickets 3 to 6 feet tall and wide.
  • In heavy black clay, plant high on a slight mound or work in coarse sand for drainage; in the sandier soils west of the metro it drains on its own but needs water more often through the first summer.
  • Water deeply once a week for the first growing season, then taper to occasional deep soaking during extended dry spells once established.
  • Wear thick gloves when pruning or weeding nearby, the spiny, holly-like leaflets scratch.
  • The plant spreads by root suckers over time, pull or clip unwanted shoots at the base if you want to keep it to one clump instead of a thicket.

Fall

Fall is a good second window to plant or transplant agarita since mild weather lets roots establish before next summer, though established shrubs need little attention now.

  • Plant new agarita in October or November while the soil is still warm and the air has cooled, giving roots months to settle in before summer.
  • Water new fall plantings once a week through the first two months if rain is scarce.
  • Established shrubs need no regular watering in fall unless the season runs unusually dry.
  • Save any shaping or sucker removal for this season, after the summer heat has passed and before spring flowering begins.
  • As an evergreen, agarita keeps its leaflets year round, so there is no fall leaf drop to clean up.

Because agarita stays green through fall while deciduous neighbors go bare, it keeps a front bed looking maintained with no extra work.

Winter

Agarita stays evergreen and mostly dormant through the North Texas winter, needing almost no care beyond occasional freeze protection for young plants.

  • Established agarita tolerates the region's typical short freezes without protection, it is winter hardy through USDA zone 7 to 9, which covers the local 8a to 8b range.
  • During a severe Arctic outbreak, cover shrubs under one year in the ground with a frost cloth overnight.
  • Skip watering in winter unless there has been no rain for several weeks and the soil is dry several inches down.
  • Late winter, January into early February, is the last window for any structural pruning before spring flowering starts.
  • Watch for the first fragrant yellow flowers as early as late February, a sign the shrub is breaking dormancy.

Its structured, evergreen form holds visual interest through winter when many neighboring beds look bare.

Spring

Spring is agarita's main show, fragrant yellow flowers followed by the year's new leaflet growth, and the best window to put a new shrub in the ground.

  • Plant new agarita after the last frost (mid March) so roots have time to establish before summer heat arrives.
  • Expect fragrant yellow flowers from February into April, among the earliest nectar sources for native bees in North Texas.
  • Water new plantings twice a week for the first six weeks, then cut back to once a week.
  • Hold off on pruning until after the flowers and developing berries finish, usually by early summer, so you do not cut off the year's fruit.
  • A light flush of new blue green leaflets in April and May is normal new growth and needs no action.

Spring flowers and fresh leaflet growth read as an intentional, healthy planting rather than a neglected corner of the yard.

Summer

Once established, agarita is one of the toughest shrubs for a North Texas summer, needing little to no supplemental water even through the hottest weeks.

  • Shrubs in the ground more than one year rarely need summer water beyond an occasional deep soak during a multi-week dry stretch.
  • First-summer plantings still need weekly deep watering through July and August since their roots have not spread out fully yet.
  • Red berries ripen and drop through early summer, expect some fruit litter under the plant and sweep it off pavement as needed.
  • Skip fertilizer and pruning in the hottest weeks, both push new growth the plant cannot support in 100F afternoons.
  • Keep a 2 to 3 inch mulch ring around the base, pulled back a few inches from the trunk, to hold soil moisture.

Dropped berries can stain a sidewalk or driveway if left, sweeping them promptly keeps the front bed looking tended.

Sources: Lady Bird Johnson Wildflower Center: Mahonia trifoliolata, Missouri Botanical Garden Plant Finder: Mahonia trifoliolata

Edwards Plateau (includes San Antonio, TX)

Year-round

Agarita is a native Hill Country evergreen that settles into San Antonio yards and then mostly takes care of itself.

  • It is native to the Edwards Plateau and Hill Country limestone country around San Antonio and Bexar County, so it is already matched to your rock and heat.
  • Give it full sun to light shade and well drained rocky or limestone soil. Standing water or heavy wet clay is the one thing it does not tolerate.
  • Once it is established it needs little to no extra water and can go weeks without rain and still look good.
  • It grows slowly to roughly three to six feet, sometimes taller in full sun, with sharp spiny gray green leaves, so keep it away from walkways, play areas, and any spot where people or pets brush past.
  • Its bright yellow flowers open in late winter ahead of most other plants and are one of the first nectar sources of the year for native bees.

Fall

Fall is the better planting window for Agarita around San Antonio, ahead of next summer's heat.

  • Cooler air and soil that is still warm from summer let new roots grow before next year's heat arrives, so fall is a stronger planting window than spring for this slow grower.
  • Water a newly planted Agarita deeply about once a week through fall if rain is light, then taper off once cooler weather settles in for good.
  • No fertilizer is needed. Agarita is built for lean, rocky Hill Country soil and extra feeding does not help it.
  • This is a good time to remove any dead or damaged branches left over from summer stress, working slowly and with thick gloves because of the spines.
  • Foliage stays evergreen gray green through fall, so there is no seasonal leaf drop or cleanup to plan for.

Clearing out dead or damaged branches now keeps the hedge looking neat heading into winter.

Winter

Winter is when Agarita rests and holds its evergreen structure through San Antonio's mild cold snaps.

  • Agarita is evergreen and keeps its gray green leaves all winter, so it will not go bare the way many other hedge shrubs do.
  • San Antonio sits around USDA zone 8b to 9a, and the shrub came through the deep February 2021 freeze across Texas without lasting damage.
  • If a rare hard freeze browns some leaf tips, wait until new growth starts in spring before cutting anything back. Cutting too early can push tender new growth right before another cold snap.
  • Late winter, once the worst cold has passed but before the February flowers open, is the best time to remove dead or awkward branches.
  • No water is needed beyond normal winter rainfall for an established plant.

Trimming out dead wood in late winter, just before the yellow flowers open, gives the hedge a tidy shape going into spring.

Spring

Spring is Agarita's big show around San Antonio, with fragrant flowers first and berries close behind.

  • Flowers open anywhere from February through April, often starting before San Antonio's average last frost in mid to late February, so a late cold snap can nip open blooms without hurting the plant itself.
  • Those early yellow flowers are one of the first nectar sources of the year for native bees and butterflies, so it is worth leaving the shrub alone rather than shearing it while it is in bloom.
  • By April the flowers give way to small green berries that ripen bright red through May and June.
  • No extra water is usually needed beyond normal spring rainfall, unless the plant went into the ground within the last year.
  • Skip major shaping now. A hard cutback in spring removes the flowers and developing berries that birds and pollinators are using.

Leaving the shrub alone during bloom still reads as tended from the street, not overgrown, since the flowers and gray green foliage carry the look on their own.

Summer

Summer is Agarita's easiest season in San Antonio, since an established plant needs almost nothing while the heat sets in.

  • By June the red berries are mostly gone, eaten by birds, so do not expect much left on the plant past early summer.
  • Established plants handle San Antonio's summer heat and drought without supplemental water. A two to three inch layer of mulch over the root zone helps it hold what moisture it gets.
  • A plant still in its first summer in the ground is the exception. Give it a deep soak every couple of weeks during a dry stretch until it gets through its first full year.
  • Stick to removing dead or damaged wood if needed. Heavy pruning in peak heat stresses the plant for no real benefit.
  • Dropped berries and leaf litter under the shrub can stain a walkway or patio if left too long.

A quick sweep of the walkway or patio after the berries drop keeps the front bed looking cared for.

Sources: Lady Bird Johnson Wildflower Center, Native Plant Database: Mahonia trifoliolata, Lady Bird Johnson Wildflower Center, Mr. Smarty Plants: early spring bee plants, Texas Master Naturalist, Alamo Chapter: Agarita, FrostDates.com: San Antonio, Texas frost dates (community tip), Texas A&M AgriLife Extension, Aggie Horticulture: Fall Ideal for Planting Trees and Shrubs, Garden Style San Antonio: Agarita

Texas Blackland Prairies (includes Dallas, TX)

Year-round

Agarita is a thorny, evergreen shrub that is native to this part of North Texas and needs very little care once it settles in. Its fragrant yellow late winter flowers are one of the first nectar sources for native bees each year.

  • Plant in full sun to light shade, spacing shrubs 4 to 6 feet apart since they spread into thickets 3 to 6 feet tall and wide.
  • In heavy black clay, plant high on a slight mound or work in coarse sand for drainage; in the sandier soils west of the metro it drains on its own but needs water more often through the first summer.
  • Water deeply once a week for the first growing season, then taper to occasional deep soaking during extended dry spells once established.
  • Wear thick gloves when pruning or weeding nearby, the spiny, holly-like leaflets scratch.
  • The plant spreads by root suckers over time, pull or clip unwanted shoots at the base if you want to keep it to one clump instead of a thicket.

Fall

Fall is a good second window to plant or transplant agarita since mild weather lets roots establish before next summer, though established shrubs need little attention now.

  • Plant new agarita in October or November while the soil is still warm and the air has cooled, giving roots months to settle in before summer.
  • Water new fall plantings once a week through the first two months if rain is scarce.
  • Established shrubs need no regular watering in fall unless the season runs unusually dry.
  • Save any shaping or sucker removal for this season, after the summer heat has passed and before spring flowering begins.
  • As an evergreen, agarita keeps its leaflets year round, so there is no fall leaf drop to clean up.

Because agarita stays green through fall while deciduous neighbors go bare, it keeps a front bed looking maintained with no extra work.

Winter

Agarita stays evergreen and mostly dormant through the North Texas winter, needing almost no care beyond occasional freeze protection for young plants.

  • Established agarita tolerates the region's typical short freezes without protection, it is winter hardy through USDA zone 7 to 9, which covers the local 8a to 8b range.
  • During a severe Arctic outbreak, cover shrubs under one year in the ground with a frost cloth overnight.
  • Skip watering in winter unless there has been no rain for several weeks and the soil is dry several inches down.
  • Late winter, January into early February, is the last window for any structural pruning before spring flowering starts.
  • Watch for the first fragrant yellow flowers as early as late February, a sign the shrub is breaking dormancy.

Its structured, evergreen form holds visual interest through winter when many neighboring beds look bare.

Spring

Spring is agarita's main show, fragrant yellow flowers followed by the year's new leaflet growth, and the best window to put a new shrub in the ground.

  • Plant new agarita after the last frost (mid March) so roots have time to establish before summer heat arrives.
  • Expect fragrant yellow flowers from February into April, among the earliest nectar sources for native bees in North Texas.
  • Water new plantings twice a week for the first six weeks, then cut back to once a week.
  • Hold off on pruning until after the flowers and developing berries finish, usually by early summer, so you do not cut off the year's fruit.
  • A light flush of new blue green leaflets in April and May is normal new growth and needs no action.

Spring flowers and fresh leaflet growth read as an intentional, healthy planting rather than a neglected corner of the yard.

Summer

Once established, agarita is one of the toughest shrubs for a North Texas summer, needing little to no supplemental water even through the hottest weeks.

  • Shrubs in the ground more than one year rarely need summer water beyond an occasional deep soak during a multi-week dry stretch.
  • First-summer plantings still need weekly deep watering through July and August since their roots have not spread out fully yet.
  • Red berries ripen and drop through early summer, expect some fruit litter under the plant and sweep it off pavement as needed.
  • Skip fertilizer and pruning in the hottest weeks, both push new growth the plant cannot support in 100F afternoons.
  • Keep a 2 to 3 inch mulch ring around the base, pulled back a few inches from the trunk, to hold soil moisture.

Dropped berries can stain a sidewalk or driveway if left, sweeping them promptly keeps the front bed looking tended.

Sources: Lady Bird Johnson Wildflower Center: Mahonia trifoliolata, Missouri Botanical Garden Plant Finder: Mahonia trifoliolata

In an HOA neighborhood

Agarita is an HOA-friendly choice in the right placement. Maintenance level: low. Tidiness: 2 out of 5.

Works well in: mid zone.

  • Prickly leaves, keep away from walkways
  • Rigid, spreading branches can form thickets

Wildlife value

The spring blooms provide nectar for bees, butterflies, and other beneficial insects. Birds seek out the nutritious red berries in summer and fall.

Common questions

When does agarita bloom?
Agarita blooms in early spring, typically from March through May, producing small clusters of fragrant yellow flowers before its red berries form.
What pollinators are attracted to agarita?
Agarita flowers draw bees, butterflies, and other nectar-seeking insects, making it a useful early-season nectar source in dry shrubland settings.
How much water does agarita need?
Agarita is drought tolerant and prefers low to moderate water. Established plants generally do not need supplemental irrigation except in extended dry spells.
What kind of light does agarita grow best in?
Agarita grows best in full sun but will also tolerate part sun or light shade, especially in hotter climates where some afternoon shade can reduce stress.
Is agarita evergreen or deciduous?
Agarita keeps its spiny, holly-like blue-green leaves year round, so it is considered an evergreen shrub.
Is Agarita HOA-friendly?
Agarita is generally an HOA-friendly choice in the right placement, with low maintenance.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

Ready to grow Agarita? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.