Redshank
adenostoma sparsifolium
Also known as: ["Mountain whitethorn","Few-leaved Adenostoma"]
Overview
A small, evergreen tree or large shrub native to chaparral regions of California, characterized by its sparse foliage and small, white flowers.
Benefits & Perks
["drought tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Rosales |
| Family: | Rosaceae |
| Genus: | Adenostoma |
| Botanical Name: | Adenostoma sparsifolium |
Plant Characteristics
Basic Information
- Category: Trees
- Suitable Location: outdoor garden in a dry, sunny area
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–35°C"}
- Hardiness: {"zones":"7–10"}
- Misting: rarely required
- Drainage: Fast-draining. Poor drainage can lead to 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 in late winter/early spring.
- 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 may become leggy.
Sunlight Tolerance Tips:
Acclimate plants gradually to full sun if moved from shade. Protect from intense midday sun in hot climates to prevent scorching. Outdoor placement is ideal for maximum light exposure.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun
Full sun is best; avoid deep shade; protect from harsh afternoon sun in summer.
Watering
every 2–3 weeks during active growth, less in winter
Water deeply to encourage deep root growth; allow soil to dry between waterings; reduce frequency in winter.
Soil
well-drained, sandy or loamy soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure excellent drainage; avoid heavy clay soils; amend with sand or perlite if needed.
Temperature
Thrives in warm, dry climates. Ideal range is 60–85°F (15–29°C). Tolerates mild frosts but prefers mild winters.
Protect from frost; avoid sudden temperature swings; ensure good air circulation in heat.
Fertilizing
every 3–4 months with slow-release fertilizer during spring
Fertilize only once a year in spring; use a balanced formula; avoid high-nitrogen fertilizers.
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 consistent moisture.
Medium
Well-draining mix of perlite and peat moss or cactus mix.
Hormone
Recommended to use rooting hormone for better success.
Timeline
Roots may develop in 4–8 weeks; establishment takes 3–6 months.
Tools Needed
Pruning shears, rooting hormone, small pots, well-draining medium.
Quick Tips
Use healthy, non-flowering stems; keep cuttings out of direct sun; maintain humidity with a plastic cover.
Pruning & Repotting
Pruning Guide
Method
Selective pruning of dead or crossing branches; light shaping to maintain form.
Pruning Plan
Prune to maintain shape, remove dead wood, and encourage bushier growth. Best done after flowering or in late winter.
Tools
Pruning shears, loppers (for larger branches), sterilizing solution.
Checklist
Sterilize tools; prune after flowering; remove dead/diseased wood; shape lightly.
Repotting Guide
Best Season
Early spring before new growth begins.
Pot Size
Move to a pot one size larger (1–2 inches wider in diameter).
Method
Use a well-draining soil mix; gently tease out roots if compacted; ensure good drainage holes.
Suggestions
Repot only when root-bound or every 3–4 years. This plant prefers being slightly root-bound.
Checklist
Check root-bound status; use fresh soil mix; ensure drainage; minimal root disturbance.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure drainage; adjust frequency seasonally.
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 and fungal growth. Ensure excess water drains away to prevent root rot.
Watering Schedule Tips
Water deeply but infrequently, allowing soil to dry out between waterings. Reduce watering in winter to once every 4–6 weeks.
Soil Improvement
Add perlite or coarse sand to improve drainage; incorporate compost for organic matter.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis or leaf drop in extreme heat; wilting or browning in cold stress.
Cold Stress
Low temperatures slow growth and can cause leaf drop or dieback. Prolonged cold may damage roots.
Solution: Provide winter protection with mulch or move to a sheltered location. Avoid overwatering in cold weather.
Hot Stress
Excessive heat can cause leaf scorch, wilting, or reduced flowering.
Solution: Provide afternoon shade in extreme heat; water deeply but infrequently to maintain soil moisture without waterlogging.
Fertilizing Guide
Fertilizing Checklist
Use balanced fertilizer; apply in spring; avoid overfertilization; water after application.
Fertilizing Method
Use a balanced, slow-release fertilizer in early spring. Avoid frequent feeding; overfertilization can harm this plant.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicAdenostoma sparsifolium is not known to be toxic to cats. There are no reported cases of adverse effects in felines after exposure to this plant.
⚡ Toxic If:
None
Dogs
Non-toxicAdenostoma sparsifolium is not known to be toxic to dogs. There are no reported cases of adverse effects in canines after exposure to this plant.
⚡ Toxic If:
None
Humans
Non-toxicAdenostoma sparsifolium is not known to exhibit toxic properties to humans. The plant has no reported adverse effects when ingested or handled.
⚡ Toxic If:
None
Frequently Asked Questions
Q: Is Adenostoma sparsifolium suitable for drought conditions?
A: Yes, it is highly drought-tolerant and thrives in arid environments.
Q: Does this plant attract wildlife?
A: Yes, it attracts bees, butterflies, and birds due to its flowers.
Q: How should I care for Adenostoma sparsifolium?
A: It requires minimal maintenance, prefers full sun, and well-drained soil.
Quick Reference
| Family: | Rosaceae |
| Care: | moderate |
| Light: | full sun |
| Water: | every 2–3 weeks during activ |
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