Yellow Alyssum
alyssum murale
Also known as: ["Bittercress","Madwort"]
Overview
Alyssum murale is a perennial herbaceous plant native to Europe, known for its bright yellow flowers and low-growing habit.
Benefits & Perks
["long-flowering","disease resistant","deer resistant","pet-friendly","cold hardy","wildlife attractant (bees, butterflies, birds)","drought tolerant","shade tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Brassicales |
| Family: | Brassicaceae |
| Genus: | Alyssum |
| Botanical Name: | Alyssum murale |
Plant Characteristics
Basic Information
- Category: Flowers
- Suitable Location: rock gardens, borders, or containers in full sun
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"5–8"}
- Misting: rarely required
- Drainage: Fast-draining to prevent root rot.
- Soil Type: Well-draining, loamy soil with added organic matter; can tolerate poor soils.
Maintenance Level
- Maintenance Level: low
- Toughness Level: high
- Pruning Frequency: After flowering or every 4–6 weeks during the growing season.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless necessary to control size.
Care Details
Ideal Sunlight Coverage:
Full sun (6–8 hours of direct sunlight daily); tolerates partial shade in hot climates.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from harsh afternoon sun in hot regions; ensure adequate air circulation to prevent mildew.
Care Requirements
Care Difficulty
easyeasy
Sunlight
full sun
Rotate plants for even light exposure; use shade cloth in extreme heat; avoid placing in drafty areas.
Watering
every 7–10 days during active growth, reduce in winter
Water thoroughly but infrequently; ensure soil dries between waterings; avoid overhead watering to prevent fungal issues.
Soil
well-drained, sandy loam
pH: Slightly alkaline to neutral (pH 6.5–7.5).
Use a cactus or succulent mix; avoid heavy clay soils; ensure pots have drainage holes.
Temperature
Prefers cool to moderate temperatures (60–75°F or 15–24°C); can tolerate cooler nights.
Avoid sudden temperature fluctuations; protect from frost; ensure good air circulation in hot weather.
Fertilizing
every 4–6 weeks during growing season
Apply fertilizer after watering to prevent root burn; stop fertilizing when plants are dormant; use a low-nitrogen formula for flowering plants.
Propagation
Methods
Stem cuttings or seed; stem cuttings are faster and more reliable.
Step-by-Step Propagation Guide
- Take a 4–6 inch cutting.
- Remove lower leaves.
- Dip in rooting hormone (optional).
- Plant in moist medium.
- Keep warm and humid.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm, humid conditions with indirect light; maintain consistent moisture.
Medium
Well-draining potting mix with perlite or sand; can also root in water.
Hormone
Optional but recommended for faster rooting.
Timeline
Roots develop in 2–3 weeks; new growth appears in 4–6 weeks.
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 bag or dome.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips to encourage branching; deadhead spent flowers to promote new blooms.
Pruning Plan
Prune to maintain shape, encourage bushier growth, and remove spent flowers to prolong blooming.
Tools
Pruning shears, gloves, clean cutting tool.
Checklist
Use clean tools; prune dead or damaged stems; remove spent flowers; shape as desired.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
One size larger pot (e.g., 2 inches wider in diameter).
Method
Remove plant gently; trim any circling roots; place in a slightly larger pot with fresh soil; water thoroughly.
Suggestions
Repot every 1–2 years or when roots fill the pot; beneficial for container-grown plants.
Checklist
Choose appropriate pot size; prepare fresh soil mix; handle roots carefully; water after repotting.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture; water deeply; ensure drainage; avoid wetting leaves.
How to Apply Water Properly
Water at the base of the plant, ensuring moisture reaches the root zone; allow excess water to drain away; water in the morning to reduce evaporation and fungal risk.
Watering Schedule Tips
Water deeply once the top inch of soil feels dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add perlite or sand for drainage; incorporate compost for fertility; ensure good aeration.
Temperature Stress Management
Signs of Temperature Issues
Wilting, yellowing leaves, stunted growth, or flower drop in extreme heat or cold.
Cold Stress
Slows growth, may cause leaf discoloration, and can lead to root damage in freezing conditions.
Solution: Provide frost protection in cold climates; avoid overwatering in cool conditions; move potted plants indoors if temperatures drop below 50°F (10°C).
Hot Stress
Leaves may scorch, growth may slow, and flowering can be reduced in excessive heat.
Solution: Provide afternoon shade; increase watering frequency; use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Check fertilizer type; dilute properly; apply during active growth; avoid winter feeding.
Fertilizing Method
Use a balanced, water-soluble fertilizer diluted to half strength every 4–6 weeks during the growing season; avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicAlyssum murale is not considered toxic to cats. There are no known adverse effects associated with ingestion or contact.
⚡ Toxic If:
Generally non-toxic
Dogs
Non-toxicAlyssum murale is not considered toxic to dogs. There are no known adverse effects associated with ingestion or contact.
⚡ Toxic If:
Generally non-toxic
Humans
Non-toxicAlyssum murale is not considered toxic to humans under normal circumstances. It is commonly used in gardens and landscapes without reported adverse effects.
⚡ Toxic If:
Generally non-toxic
Frequently Asked Questions
Q: Is Alyssum murale toxic to pets?
A: No, Alyssum murale is non-toxic to dogs and cats.
Q: How often should I water Alyssum murale?
A: Water sparingly, as it is drought-tolerant and prefers well-drained soil.
Q: Does Alyssum murale attract wildlife?
A: Yes, it attracts bees, butterflies, and birds due to its nectar-rich flowers.
Quick Reference
| Family: | Brassicaceae |
| Care: | easy |
| Light: | full sun |
| Water: | every 7–10 days during activ |
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