Texas Sage, Texas Ranger, Barometer Bush

leucophyllum frutescens

Also known as: ["Texas Sage","Texas Ranger","Barometer Bush"]

Family: Scrophulariaceae Genus: Leucophyllum Category: Shrubs

Overview

A drought-tolerant evergreen shrub native to the southwestern United States and Mexico, known for its silvery foliage and lavender flowers that bloom after rain.

Benefits & Perks

["drought tolerant","deer resistant","wildlife attractant (bees, butterflies, birds)","low maintenance","aesthetic foliage"]

Botanical Classification

Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Lamiales
Family: Scrophulariaceae
Genus: Leucophyllum
Botanical Name: Leucophyllum frutescens

Plant Characteristics

Basic Information
  • Category: Shrubs
  • Suitable Location: xeriscaped garden or rock garden, outdoor planting in warm climates
  • Suitable For:
    Busy People (low Maintenance) Outdoor Landscapers Wildlife Supporters
  • Is Weed: No
  • Allergenicity: low
Environmental Needs
  • Climate: {"temperatureRange":"5–45°C"}
  • Hardiness: {"zones":"8–11"}
  • Misting: rarely required
  • Drainage: Fast-draining to prevent root rot.
  • Soil Type: Well-draining, sandy, or loamy soil with some organic matter.
Maintenance Level
  • Maintenance Level: low
  • Toughness Level: high
  • Pruning Frequency: Annually after flowering or every 2–3 years to rejuvenate growth.
  • Pruning Intensity: Moderate; remove up to one-third of old growth if needed.
Care Details

Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily); tolerates partial shade but blooms less.

Sunlight Tolerance Tips:
Acclimate new plants to full sun gradually over 1–2 weeks; protect from intense midday sun in summer if grown in containers; ensure good air circulation to prevent fungal issues in humid conditions.

Warning Signs: Yellowing leaves, root rot, or stunted growth indicate poor drainage or incorrect soil conditions.

Care Requirements

Care Difficulty
easy

moderate

Sunlight

full sun

Full sun is essential for blooms; rotate container plants for even growth; avoid deep shade.

Watering

every 7–14 days during active growth, less frequently in winter

Water thoroughly but infrequently to encourage deep root growth; allow soil to dry completely between waterings; avoid overwatering, especially in winter.

Soil

well-draining, sandy or loamy soil

pH: Slightly alkaline to neutral (pH 7.0–8.0).

Ensure excellent drainage; avoid heavy clay soils; amend with sand or perlite if necessary.

Temperature

Thrives in hot, arid conditions; ideal range 70–90°F (21–32°C); tolerates temperatures down to 10°F (-12°C) but may suffer leaf drop.

Protect from frost; water deeply in heat; adjust care by season.

Fertilizing

every 3–4 months with a balanced, slow-release fertilizer

Fertilize only in spring; avoid over-fertilizing, which can harm the plant; use a cactus or succulent-specific fertilizer for best results.

Propagation

Methods

Stem cuttings; seeds are less common and slower to germinate.

Step-by-Step Propagation Guide
  1. Take 4–6 inch cuttings.
  2. Remove lower leaves.
  3. Dip in rooting hormone.
  4. Plant in medium.
  5. Keep moist and warm.

Best Time: Late spring or early summer when the plant is actively growing.

Environment

Warm (70–80°F), humid, and bright but indirect light; protect from direct sun until roots develop.

Medium

Well-draining mix of perlite and peat moss or cactus mix.

Hormone

Rooting hormone is recommended to improve success rates.

Timeline

Roots may form in 4–8 weeks; establish in new pot within 3–6 months.

Tools Needed

Pruning shears, rooting hormone, small pots, well-draining medium.

Quick Tips

Use fresh cuttings; keep consistently moist but not waterlogged; provide bottom heat if possible.

Pruning & Repotting

Pruning Guide
Method

Selective thinning of branches; heading back to encourage denser growth.

Pruning Plan

Prune to maintain shape, encourage bushiness, and remove dead or overgrown branches; best done after flowering or in late winter/early spring.

Tools

Pruning shears, loppers (for larger branches), gloves.

Checklist

Prune after flowering; sterilize tools; remove dead or crossing branches; shape as desired.

Repotting Guide
Best Season

Early spring before new growth begins.

Pot Size

One size up from current pot; avoid oversized pots.

Method

Remove plant gently; trim any dead roots; repot in fresh, well-draining soil; ensure pot has drainage holes.

Suggestions

Repot only when root-bound or every 2–3 years; prefers slightly crowded roots.

Checklist

Check for root-bound roots; use fresh soil; ensure good drainage; water lightly after repotting.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil moisture before watering; water deeply; ensure drainage; adjust frequency by season.

How to Apply Water Properly

Water at the base of the plant, ensuring moisture reaches the root zone; water early in the morning to minimize evaporation; ensure water drains away from the plant to prevent root rot.

Pro Tip: Use a soaker hose to deliver water directly to the roots, reducing waste and leaf wetness.
Watering Schedule Tips

Water deeply once every 1–2 weeks during spring and fall; reduce to once a month in winter; increase to twice a week in summer if rainfall is scarce.

Soil Improvement

Add perlite or coarse sand to improve drainage; incorporate compost for organic matter if needed.

Temperature Stress Management
Signs of Temperature Issues

Chlorosis or leaf drop in cold stress; wilting or stunted growth in excessive heat without water.

Cold Stress

Leaves may drop, and growth may slow or stop; prolonged cold can damage branches or kill the plant if temperatures drop below 10°F (-12°C).

Solution: Provide wind protection in winter; avoid planting in low-lying areas where cold air settles; mulch around the base to insulate roots.

Hot Stress

Leaves may wilt or scorch if watered improperly in intense heat; growth may slow if water demand is not met.

Solution: Water deeply in the morning; provide some afternoon shade if possible; ensure good air circulation to reduce heat stress.

Fertilizing Guide
Fertilizing Checklist

Fertilize in spring only; use balanced fertilizer; avoid winter feeding.

Fertilizing Method

Use a balanced, slow-release fertilizer in early spring; avoid fertilizing in late fall or winter; dilute liquid fertilizers to half-strength if used.

Common Problems & Solutions

Yellowing leaves in Leucophyllum frutescens may indicate nutrient deficiencies, overwatering, or root issues, which can impair photosynthesis and overall plant health.

Wilting in Leucophyllum frutescens is often a sign of water stress, either due to drought or root damage, which can lead to reduced turgor pressure and impaired nutrient uptake.

Leaf spots on Leucophyllum frutescens may be caused by fungal or bacterial pathogens, resulting in reduced photosynthetic capacity and potential defoliation if severe.

Rotting, particularly root or stem rot, can occur in Leucophyllum frutescens due to excessive moisture or fungal infections, leading to decay of plant tissues and potential plant death.

Toxicity Warning

Cats
Non-toxic

Leucophyllum frutescens is not toxic to cats. The plant does not produce any known toxic effects or physiological impacts on feline health when ingested or touched.

⚡ Toxic If:

None

No special precautions are necessary for cats around this plant.
Dogs
Non-toxic

Leucophyllum frutescens is not toxic to dogs. There are no known adverse effects on canine health when the plant is ingested or touched.

⚡ Toxic If:

None

No special precautions are necessary for dogs around this plant.
Humans
Non-toxic

Leucophyllum frutescens, commonly known as Texas Sage, is not considered toxic to humans. The plant has no known toxic effects or physiological impacts when ingested or touched.

⚡ Toxic If:

None

No special precautions are necessary for human handling or proximity to this plant.

Frequently Asked Questions

Q: Why does my Texas Sage not bloom?

A: Texas Sage blooms in response to humidity or rain; ensure it is not overwatered or overfertilized, as this can inhibit flowering.

Q: How often should I water Texas Sage?

A: Water deeply but infrequently, allowing the soil to dry out between waterings. Once established, it is highly drought-tolerant.

Q: Can Texas Sage be grown in containers?

A: Yes, it can be grown in large containers, but ensure adequate drainage and provide full sun exposure.

Quick Reference
Family: Scrophulariaceae
Care: easy
Light: full sun
Water: every 7–14 days during activ
Suitable For: ["busy people (low maintenance)","outdoor landscapers","wildlife supporters (attracts bees, butterflies, birds)"]
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