Davidson's bushmallow
malacothamnus davidsonii
Also known as: []
Overview
A deciduous shrub native to California, known for its soft, fuzzy leaves and pinkish-purple flowers.
Benefits & Perks
["wildlife attractant (bees, butterflies, birds)","drought tolerant","aesthetic foliage"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Malvales |
| Family: | Malvaceae |
| Genus: | Malacothamnus |
| Botanical Name: | Malacothamnus davidsonii |
Plant Characteristics
Basic Information
- Category: Shrubs
- Suitable Location: native coastal sage scrub, adaptable to garden beds or large containers
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"7–10"}
- Misting: rarely required, only if grown in very dry indoor conditions
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining, sandy loam with organic matter; mimics native coastal sage scrub soil.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: moderate
- Pruning Frequency: Annually in late winter or early spring before new growth begins.
- Pruning Intensity: Moderate; remove up to one-third of the oldest stems to rejuvenate the plant.
Care Details
Ideal Sunlight Coverage:
Full sun to partial shade; 6–8 hours of direct sunlight daily, with some afternoon shade in hot climates.
Sunlight Tolerance Tips:
Acclimate gradually to intense sunlight; protect from harsh midday sun; adjust placement based on seasonal light intensity.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun to partial shade
Rotate plant for even light exposure; use shade cloth in extreme heat; avoid sudden light changes.
Watering
every 7–10 days during dry periods, less frequently in winter
Water thoroughly but infrequently; allow soil to dry between waterings; avoid overwatering to prevent root rot.
Soil
well-draining, sandy or loamy soil with low fertility
pH: Slightly acidic to neutral, pH 6.0–7.0.
Avoid heavy clay soils; ensure pots have drainage holes; use a mix with 30% organic matter.
Temperature
Thrives in mild temperatures, 60–75°F (15–24°C); tolerates cooler nights but prefers frost-free conditions.
Avoid sudden temperature swings; protect from frost; monitor for heat stress signs.
Fertilizing
rarely required, if used then every 3–4 months with a balanced, slow-release fertilizer
Fertilize sparingly to avoid excessive growth; use organic options like compost tea; stop fertilizing in dormant periods.
Propagation
Methods
Stem cuttings or seed; stem cuttings are more reliable for home growers.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Keep moist and warm.
Best Time: Late spring or early summer when the plant is actively growing.
Environment
Warm, humid environment with indirect light; maintain 70–75°F (21–24°C) and high humidity.
Medium
Well-draining mix of perlite and peat moss or cactus mix.
Hormone
Rooting hormone is recommended to improve success rates.
Timeline
Roots develop in 4–6 weeks; establish in new pot after 2–3 months.
Tools Needed
Pruning shears, rooting hormone, small pots, misting spray bottle.
Quick Tips
Use healthy, non-flowering stems; maintain consistent moisture; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Selective thinning of stems; cut just above a leaf node or bud.
Pruning Plan
Prune to maintain shape, encourage bushiness, and remove dead or weak growth.
Tools
Pruning shears, sterilizing solution, gloves.
Checklist
Sterilize tools; prune during dormancy; remove dead or crossing branches; shape evenly.
Repotting Guide
Best Season
Early spring before active growth starts.
Pot Size
Increase pot size by 2–3 inches in diameter; ensure good drainage holes.
Method
Remove plant gently; trim roots if necessary; repot in fresh, well-draining soil with a slightly larger pot.
Suggestions
Repot every 2–3 years or when roots fill the container; necessary to refresh soil and provide space.
Checklist
Choose appropriate pot size; prepare fresh soil mix; handle roots carefully; water lightly after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure proper drainage; adjust frequency by season.
How to Apply Water Properly
Water directly at the root zone until water drains from the bottom; ensure even moisture without waterlogging; water early in the morning to reduce evaporation.
Watering Schedule Tips
Water deeply once every 7–10 days during active growth in spring and summer; reduce frequency to once every 3–4 weeks in fall and winter to mimic natural drought conditions.
Soil Improvement
Add perlite or coarse sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, leaf drop, or browning edges in excessive heat; stunted growth or leaf damage in cold stress.
Cold Stress
Low temperatures slow growth and can cause leaf damage or dieback; frost can be lethal.
Solution: Protect from frost with a frost cloth; move to a sheltered location; avoid watering before cold nights.
Hot Stress
Excessive heat can lead to wilting, leaf scorch, or reduced flowering.
Solution: Provide afternoon shade; increase humidity with misting; water deeply during heatwaves.
Fertilizing Guide
Fertilizing Checklist
Use diluted fertilizer; apply during active growth; avoid over-fertilization; flush soil occasionally.
Fertilizing Method
Use a balanced, slow-release fertilizer diluted to half strength; apply in early spring and midsummer; avoid fertilizing in fall and winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicMalacothamnus davidsonii is not known to be toxic to cats. It does not pose a significant risk if ingested or handled.
⚡ Toxic If:
None
Dogs
Non-toxicMalacothamnus davidsonii is not known to be toxic to dogs. It does not pose a significant risk if ingested or handled.
⚡ Toxic If:
None
Humans
Non-toxicMalacothamnus davidsonii is not known to exhibit toxic properties to humans. It is generally considered safe for handling and consumption.
⚡ Toxic If:
None
Frequently Asked Questions
Q: Is Malacothamnus davidsonii suitable for coastal gardens?
A: Yes, it is well-adapted to coastal conditions and tolerates salt spray.
Q: How often should I water this plant?
A: Water deeply but infrequently, allowing the soil to dry between waterings.
Q: Does this plant require pruning?
A: Light pruning after flowering can help maintain shape and encourage new growth.
Quick Reference
| Family: | Malvaceae |
| Care: | moderate |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during dry p |
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