Green-blossom Broom
genista sphaerocarpa
Also known as: ["Green-blossom Broom","Green-flowered Broom"]
Overview
A deciduous shrub native to the Mediterranean region, known for its bright green flowers and spiny stems.
Benefits & Perks
["drought tolerant","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Fabales |
| Family: | Fabaceae |
| Genus: | Genista |
| Botanical Name: | Genista sphaerocarpa |
Plant Characteristics
Basic Information
- Category: Shrubs
- Suitable Location: outdoor garden in a sunny, open position
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–35°C"}
- Hardiness: {"zones":"7–9"}
- Misting: rarely required
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining, sandy, or loamy soil with low organic matter.
Maintenance Level
- Maintenance Level: moderate
- Toughness Level: high
- Pruning Frequency: Annually, after flowering or in late winter/early spring before new growth begins.
- Pruning Intensity: Moderate; remove up to one-third of old growth to rejuvenate the plant.
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 intense sunlight if moving from shade. Protect from harsh midday sun in hot climates to prevent scorching. Indoors, place near a south-facing window.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun
Rotate plant weekly for even growth; use sheer curtains to filter intense light; avoid sudden light changes.
Watering
every 7–10 days during active growth, less frequently in winter
Water thoroughly until it drains from the bottom, avoid frequent light watering, and adjust frequency based on season and growth stage.
Soil
well-drained, sandy or loamy soil
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure pots have drainage holes; avoid heavy clay soils; use gritty mixes for container planting.
Temperature
Prefers moderate to warm temperatures (65–75°F / 18–24°C). Tolerates cooler temperatures but avoid frost.
Avoid placing near drafty windows or heat vents; protect from frost; maintain consistent temperatures.
Fertilizing
every 4–6 weeks during spring and summer
Fertilize only during active growth; dilute liquid fertilizer to half strength if used; skip fertilizing in winter.
Propagation
Methods
Stem cuttings taken from semi-hardwood growth.
Step-by-Step Propagation Guide
- Take 4–6 inch cuttings.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Maintain humidity.
Best Time: Late spring to early summer when new growth is mature but not woody.
Environment
Warm (70–75°F / 21–24°C), high humidity (70–80%), and bright indirect light.
Medium
Well-draining mix of perlite and peat moss or cactus mix.
Hormone
Recommended to use rooting hormone to improve success rates.
Timeline
Roots may develop in 4–8 weeks; establishment takes several months.
Tools Needed
Pruning shears, rooting hormone, small pots, misting spray bottle, plastic bags or propagation dome.
Quick Tips
Use sharp, clean tools; keep soil consistently moist but not waterlogged; provide bottom heat if possible.
Pruning & Repotting
Pruning Guide
Method
Selective thinning of branches and light shaping cuts to maintain form.
Pruning Plan
Prune to maintain shape, encourage bushiness, and remove dead or weak growth. Best done after flowering to avoid cutting off buds.
Tools
Pruning shears, loppers (for larger branches), gloves, disinfectant for tools.
Checklist
Disinfect tools; prune after flowering; remove dead/damaged growth; shape lightly.
Repotting Guide
Best Season
Early spring before active growth starts.
Pot Size
One size larger pot (e.g., +2–3 inches in diameter).
Method
Remove plant gently; trim any circling roots; place in a slightly larger pot with fresh, well-draining soil; water thoroughly.
Suggestions
Repot only when root-bound or every 2–3 years to refresh soil and provide space for growth.
Checklist
Check root-bound status; choose appropriate pot size; use fresh soil mix; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure drainage; adjust for season.
How to Apply Water Properly
Water directly at the root zone, ensuring even moisture distribution. Water early in the day to minimize evaporation and allow foliage to dry. 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 match lower light and growth conditions.
Soil Improvement
Add coarse sand, perlite, or gravel to improve drainage. Incorporate small amounts of compost for fertility if needed.
Temperature Stress Management
Signs of Temperature Issues
Leaf drop, yellowing, stunted growth, or wilting in response to extreme cold or heat.
Cold Stress
Low temperatures slow growth and can cause root damage or dieback, especially if combined with wet soil.
Solution: Protect from frost with a frost cloth or move to a sheltered location. Ensure soil is well-drained to prevent cold root damage.
Hot Stress
Excessive heat can lead to wilting, leaf scorch, or reduced flowering if not accompanied by adequate water.
Solution: Provide afternoon shade in extreme heat, increase watering frequency, and use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Check growth stage; use balanced fertilizer; apply sparingly; avoid winter feeding.
Fertilizing Method
Use a balanced, slow-release fertilizer in early spring. Avoid frequent feeding; over-fertilization can harm this plant.
Common Problems & Solutions
Toxicity Warning
Cats
ToxicCats are susceptible to toxicity from Genista sphaerocarpa due to its alkaloid content. Ingestion can result in severe gastrointestinal and systemic effects, requiring immediate veterinary intervention.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
ToxicIn dogs, ingestion of Genista sphaerocarpa can lead to gastrointestinal upset and systemic toxicity due to the presence of alkaloids. These compounds can disrupt normal metabolic processes and cause adverse health effects.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
ToxicGenista sphaerocarpa contains toxic compounds, primarily alkaloids, which can cause significant physiological disturbances upon ingestion. These compounds interfere with normal cellular functions and can lead to systemic toxicity.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Genista sphaerocarpa toxic to pets?
A: Yes, it is toxic to dogs and cats.
Q: Does this plant attract wildlife?
A: Yes, it attracts bees, butterflies, and birds.
Q: How drought-tolerant is this plant?
A: It is highly drought-tolerant once established.
Quick Reference
| Family: | Fabaceae |
| Care: | moderate |
| Light: | full sun |
| Water: | every 7–10 days during activ |
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