Grass Pea
lathyrus nissolia
Also known as: ["Slender Vetchling","Grass Vetchling"]
Overview
A slender, herbaceous legume with grass-like leaves and small, pea-like flowers.
Benefits & Perks
["wildlife attractant (bees, butterflies, birds)","drought tolerant"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Fabales |
| Family: | Fabaceae |
| Genus: | Lathyrus |
| Botanical Name: | Lathyrus nissolia |
Plant Characteristics
Basic Information
- Category: Herbs & Weeds
- Suitable Location: garden bed or container in a sunny spot
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–30°C"}
- Hardiness: {"zones":"6–9"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging; ensure excess water can escape freely.
- Soil Type: Well-draining, loamy soil with added organic matter; can tolerate slightly sandy or clay soils if amended.
Maintenance Level
- Maintenance Level: low
- Toughness Level: moderate
- Pruning Frequency: Light pruning can be done as needed; a more thorough pruning is recommended in early spring before new growth begins.
- Pruning Intensity: Light to moderate; avoid heavy pruning unless necessary to control size or shape.
Care Details
Ideal Sunlight Coverage:
Full sun to partial shade; 6–8 hours of direct sunlight per day, with some afternoon shade in hot climates.
Sunlight Tolerance Tips:
Acclimate plants gradually to intense sunlight; protect from harsh afternoon sun to prevent scorching; adjust placement based on indoor/outdoor conditions.
Care Requirements
Care Difficulty
easymoderate
Sunlight
full sun to partial shade
Rotate plants regularly for even growth; use sheer curtains to filter intense light indoors; provide shade during peak summer hours.
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, loamy soil with moderate organic matter
pH: Slightly acidic to neutral (pH 6.0–7.0).
Ensure pots have drainage holes; avoid compacted soil; test pH periodically; amend as needed.
Temperature
Prefers cool to moderate temperatures, ideally 60–75°F (15–24°C); tolerates light frosts but may struggle in extreme heat.
Avoid sudden temperature fluctuations; protect from drafts; maintain consistent temperatures for optimal growth.
Fertilizing
every 4–6 weeks during spring and summer
Apply fertilizer after watering to prevent root burn; use a balanced NPK ratio for overall health; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings or seed propagation; stem cuttings are faster and more reliable for home growers.
Step-by-Step Propagation Guide
- Select healthy stems.
- Cut below a node.
- Remove lower leaves.
- Dip in rooting hormone.
- Plant in medium.
- Maintain humidity.
- Wait for roots.
Best Time: Spring or early summer when the plant is actively growing.
Environment
High humidity (70–90%), warm temperatures (70–75°F or 21–24°C), and indirect light for cuttings; consistent moisture for seeds.
Medium
Well-draining potting mix with perlite or sand for cuttings; sterile seed starting mix for seeds.
Hormone
Rooting hormone is recommended for stem cuttings to improve success rates.
Timeline
Stem cuttings may root in 2–4 weeks; seeds may germinate in 1–3 weeks under ideal conditions.
Tools Needed
Pruning shears, rooting hormone, small pots, humidity dome or plastic bag, well-draining medium.
Quick Tips
Use sharp, clean tools to prevent infection; maintain consistent moisture without waterlogging; provide bottom heat for faster rooting.
Pruning & Repotting
Pruning Guide
Method
Pinch back tips to encourage branching; remove dead or damaged stems at the base; trim leggy growth to promote compactness.
Pruning Plan
Prune to maintain shape, encourage bushier growth, and remove dead or weak stems; focus on improving air circulation and light penetration.
Tools
Pruning shears, sharp scissors, or your fingers for pinching small stems.
Checklist
Use clean tools; prune during dormancy or early growth; remove dead or diseased parts; avoid over-pruning.
Repotting Guide
Best Season
Early spring before active growth begins is the best time to repot.
Pot Size
Choose a pot one size larger than the current one, with a diameter 1–2 inches wider.
Method
Gently remove the plant; trim any circling roots; place in a new pot with fresh, well-draining soil; water thoroughly after repotting.
Suggestions
Repot every 2–3 years or when the plant becomes root-bound; beneficial for refreshing soil and providing more space.
Checklist
Select appropriate pot size; prepare fresh soil mix; handle roots carefully; water after repotting; place in a shaded area for a few days.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply at the base; ensure proper drainage; adjust frequency based on season and weather.
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; allow excess water to drain away to prevent waterlogging.
Watering Schedule Tips
Water deeply once the top inch of soil is dry; reduce frequency in winter to prevent root rot.
Soil Improvement
Add compost or well-rotted manure for fertility; mix in perlite or sand for drainage; use mulch to retain moisture and improve soil structure.
Temperature Stress Management
Signs of Temperature Issues
Wilting, yellowing leaves, or stunted growth in excessive heat; leaf drop or browning in cold stress.
Cold Stress
Low temperatures slow growth and may cause leaf discoloration or dieback; prolonged cold can damage roots.
Solution: Protect with a layer of mulch; move potted plants indoors or to a sheltered location; avoid overwatering in cold conditions.
Hot Stress
Excessive heat can lead to wilting, flower drop, and reduced vigor; may go dormant in extreme heat.
Solution: Provide shade during peak heat; increase watering frequency; use mulch to retain soil moisture.
Fertilizing Guide
Fertilizing Checklist
Check fertilizer label for dilution rates; apply during active growth; avoid over-fertilizing; stop in winter.
Fertilizing Method
Use a balanced, water-soluble fertilizer diluted to half strength; apply every 4–6 weeks during the growing season (spring to early fall); avoid fertilizing in winter.
Common Problems & Solutions
Toxicity Warning
Cats
Non-toxicLathyrus nissolia is not considered toxic to cats. The seeds may cause mild gastrointestinal upset if consumed in large amounts, but no severe toxicity is expected.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Dogs
Non-toxicLathyrus nissolia is not considered toxic to dogs. The seeds may cause mild gastrointestinal upset if consumed in large amounts, but no severe toxicity is expected.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Humans
Non-toxicLathyrus nissolia is generally considered non-toxic to humans. However, ingestion of large quantities of seeds may cause mild gastrointestinal discomfort due to their high fiber content.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if eaten
Frequently Asked Questions
Q: Is Lathyrus nissolia toxic to humans?
A: Yes, it is toxic if ingested.
Q: Does this plant attract wildlife?
A: Yes, it attracts bees, butterflies, and birds.
Q: Is this plant drought-tolerant?
A: Yes, it can tolerate drought conditions.
Quick Reference
| Family: | Fabaceae |
| Care: | easy |
| Light: | full sun to partial shade |
| Water: | every 7–10 days during activ |
Get Expert Care Tips
Download the Plantious app for personalized care reminders and plant identification!
Google Play App Store
