Vanuatu Violet

oxera sulfurea

Also known as: ["Vanuatu Violet","Sulfur Oxera"]

Family: Lamiaceae Genus: Oxera Category: Flowers

Overview

A small evergreen shrub native to Vanuatu, known for its vibrant violet flowers and aromatic foliage.

Benefits & Perks

["fragrant flowers","wildlife attractant (bees, butterflies, birds)"]

Botanical Classification

Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Lamiales
Family: Lamiaceae
Genus: Oxera
Botanical Name: Oxera sulfurea

Plant Characteristics

Basic Information
  • Category: Flowers
  • Suitable Location: coastal gardens or indoor pots with bright, indirect light
  • Suitable For:
    Collectors & Enthusiasts Fragrance Lovers Wildlife Supporters
  • Is Weed: No
  • Allergenicity: low
Environmental Needs
  • Climate: {"temperatureRange":"15–30°C"}
  • Hardiness: {"zones":"10–11"}
  • Misting: every 2–3 days in dry conditions
  • Drainage: Fast-draining to prevent waterlogging.
  • Soil Type: Well-draining mix with organic matter, such as peat-based or cactus mix.
Maintenance Level
  • Maintenance Level: moderate
  • Toughness Level: moderate
  • Pruning Frequency: Annually in late winter or early spring.
  • Pruning Intensity: Moderate; remove up to one-third of growth if overgrown.
Care Details

Ideal Sunlight Coverage:
Bright indirect light for 6–8 hours daily; adjust to avoid direct sun in summer.

Sunlight Tolerance Tips:
Acclimate gradually to new light conditions; protect from intense midday sun; place in filtered light outdoors.

Warning Signs: Yellowing leaves, root rot, or stunted growth indicate poor soil or drainage issues.

Care Requirements

Care Difficulty
moderate

moderate

Sunlight

partial shade to full sun

Rotate plant weekly; use sheer curtains for indoor light; avoid direct afternoon sun.

Watering

every 7–10 days during active growth, reduce in winter

Water deeply but infrequently; ensure soil dries between waterings; avoid overwatering.

Soil

well-draining, sandy loam with organic matter

pH: Slightly acidic to neutral (pH 5.5–6.5).

Use a mix with good drainage; avoid heavy clay soils; check moisture before watering.

Temperature

Prefers 65–80°F (18–27°C); cooler temperatures (55–60°F) tolerated at night.

Avoid sudden temperature changes; maintain consistent warmth; protect from drafts.

Fertilizing

every 4–6 weeks during growing season

Fertilize only when actively growing; flush soil occasionally to prevent salt buildup; avoid overfertilizing.

Propagation

Methods

Stem cuttings in spring/summer.

Step-by-Step Propagation Guide
  1. Take 4–6 inch cutting.
  2. Remove lower leaves.
  3. Dip in hormone.
  4. Plant in medium.
  5. Maintain humidity.

Best Time: Spring or early summer when growth is active.

Environment

High humidity (70–80%), warm (70–75°F), indirect light.

Medium

Well-draining mix of peat and perlite or cactus mix.

Hormone

Recommended to promote root development.

Timeline

Roots in 4–6 weeks; establish in 2–3 months.

Tools Needed

Pruners, rooting hormone, small pots, plastic wrap.

Quick Tips

Use healthy parent stems; maintain consistent moisture; provide bottom heat if possible.

Pruning & Repotting

Pruning Guide
Method

Pinch back tips; cut just above a leaf node; thin out crowded areas.

Pruning Plan

Remove dead or leggy growth to encourage bushier form; shape as needed.

Tools

Clean pruners or scissors, disinfectant.

Checklist

Sanitize tools; prune dead/damaged growth; shape plant; clean up debris.

Repotting Guide
Best Season

Spring before active growth begins.

Pot Size

One size larger pot (1–2 inches wider in diameter).

Method

Use fresh well-draining soil; trim roots if necessary; ensure pot has drainage holes.

Suggestions

Repot every 2–3 years or when roots fill the pot; prevents root-bound conditions.

Checklist

Check root boundness; prepare new pot; trim roots; use fresh soil; water lightly after repotting.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil moisture; water deeply; ensure drainage; adjust for season.

How to Apply Water Properly

Water directly at the root zone until water drains from the bottom; ensure even moisture without waterlogging; water in the morning to reduce evaporation.

Pro Tip: Use room temperature water to avoid shocking the roots.
Watering Schedule Tips

Water thoroughly when 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 aeration.

Temperature Stress Management
Signs of Temperature Issues

Yellowing leaves (cold), wilting or leaf drop (heat), stunted growth.

Cold Stress

Slows growth, causes leaf discoloration, and may lead to root damage.

Solution: Move to a warmer location; insulate pots; avoid cold drafts.

Hot Stress

Leaves may scorch, wilt, or drop; growth may slow or stop.

Solution: Provide shade; increase humidity; water more frequently but avoid waterlogging.

Fertilizing Guide
Fertilizing Checklist

Check growth phase; dilute fertilizer; apply to moist soil; rinse between feedings.

Fertilizing Method

Use balanced liquid fertilizer diluted to half strength every 4–6 weeks during growing season (spring/summer); cease in fall/winter.

Common Problems & Solutions

Yellow leaves in Oxera sulfurea may indicate nutrient deficiencies, overwatering, or pest infestations such as mealybugs, which disrupt chlorophyll production and photosynthesis.

Wilting in Oxera sulfurea can be caused by water stress, either due to under or overwatering, or root damage from pests or pathogens, leading to reduced water uptake.

Leaf spots on Oxera sulfurea may be caused by fungal or bacterial pathogens, resulting in reduced photosynthetic efficiency and potential defoliation if left untreated.

Rotting, particularly root or stem rot, in Oxera sulfurea is often associated with excessive moisture and poor drainage, leading to decay of plant tissues and potential death of the plant.

Toxicity Warning

Cats
Non-toxic

Oxera sulfurea is not known to be toxic to cats. The plant has no documented adverse effects on felines when ingested.

⚡ Toxic If:

if eaten

No specific safety precautions are required for cats interacting with or ingesting Oxera sulfurea.
Dogs
Non-toxic

Oxera sulfurea is not known to be toxic to dogs. There are no documented cases of adverse effects following ingestion by canines.

⚡ Toxic If:

if eaten

No specific safety precautions are required for dogs interacting with or ingesting Oxera sulfurea.
Humans
Non-toxic

Oxera sulfurea is not known to exhibit toxic properties to humans. The plant has no documented adverse physiological effects when ingested.

⚡ Toxic If:

if eaten

No specific safety precautions are required for human handling or consumption of Oxera sulfurea.

Frequently Asked Questions

Q: Is Oxera sulfurea suitable for indoor cultivation?

A: It can be grown indoors with adequate light and humidity, but it thrives best in outdoor tropical or subtropical conditions.

Q: How often should Oxera sulfurea be watered?

A: Water moderately, allowing the soil to dry slightly between waterings to prevent root rot.

Q: Does Oxera sulfurea require pruning?

A: Light pruning after flowering can help maintain shape and encourage bushier growth.

Quick Reference
Family: Lamiaceae
Care: moderate
Light: partial shade to full sun
Water: every 7–10 days during activ
Suitable For: ["collectors/enthusiasts","fragrance lovers","wildlife supporters (attracts bees, butterflies, birds)"]
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