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Cruel Vine

Apocynaceae

Cruel Vine (Araujia sericifera): Complete Care Guide

Araujia sericifera

Medium ☀ïļ Bright indirect ⚠ïļ Toxic to pets

A vigorous, fast-growing vine that thrives in full sun with moderate watering. Grows in any well-draining soil. Always wear gloves when handling as latex sap causes skin irritation.

💧 Watering

Every 8 days

☀ïļ Light

Bright indirect

ðŸŒĄïļ Temperature

5° - 35°C

ðŸ’Ļ Humidity

30% - 60%

Categories

What is Cruel Vine?

Cruel Vine (Araujia sericifera) is a medium-care plant from the Apocynaceae family. Araujia sericifera, commonly known as Cruel Vine or Moth Plant, is an invasive climbing vine native to South America (Brazil, Argentina, Paraguay). It produces fragrant white to pale pink waxy flowers in summer and fall that trap moths overnight — hence its common name. The milky latex sap is a skin...

Cruel Vine grows up to 10.0m, with spread of 500cm, watering every 8 days, 5°C – 35°C, 30–60% humidity. It is not suitable for indoor environments and not safe for pets.

Without precautions, ingestion can cause irritation in pets. Keep out of reach of cats and dogs.

How to Care for Cruel Vine?

TLDR: Cruel Vine needs Bright indirect, watering every 8 days, and temperatures between 5-35°C with 30-60% humidity.

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How Often Should You Water Cruel Vine?

Water every 7-10 days during the growing season. Allow the top inch of soil to dry between waterings. Reduce watering significantly in winter. Avoid waterlogging which causes root rot.

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How Much Light Does Cruel Vine Need?

Requires full sun with at least 6 hours of direct sunlight daily. Tolerates partial shade but flowers best in full sun. Ideal for sunny walls, fences, and trellises.

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What Is the Best Soil for Cruel Vine?

Use well-draining soil with pH 6.0-7.5. Add perlite or coarse sand for improved drainage. Avoid heavy clay soils. Any fertile, loamy soil works well outdoors.

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What Pot Should You Use for Cruel Vine?

Large terracotta pot or outdoor container with trellis support. The plant needs a strong structure to climb.

Care Schedule

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Fertilize

Every 30 days

What Is Cruel Vine and Where Does It Come From?

Araujia sericifera, commonly known as Cruel Vine or Moth Plant, is an invasive climbing vine native to South America (Brazil, Argentina, Paraguay). It produces fragrant white to pale pink waxy flowers in summer and fall that trap moths overnight — hence its common name. The milky latex sap is a skin and eye irritant. It is classified as invasive in Australia, New Zealand, California, and Portugal.

How to Propagate Cruel Vine?

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Seed propagation

Seeds have silky hairs and are wind-dispersed. Sow in containers with drainage holes. Germination occurs in 2-3 weeks.

  1. 1
    Collect seeds from ripe pods in autumn
  2. 2
    Sow in light, moist potting mix in spring
  3. 3
    Keep in a warm location (20-25°C) until germination
  4. 4
    Transplant seedlings after developing 2-3 leaf pairs

Materials needed:

Ripe seedsLight potting mixContainer with drainageFine watering can
⏱ïļ Time: 2-3 weeks 📊 Success rate: high 🗓ïļ Best season: Spring
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Stem cutting

Always wear gloves when cutting as latex sap irritates skin. Discard medium if mold appears.

  1. 1
    Take a semi-hardwood cutting of 15 cm in late summer
  2. 2
    Remove lower leaves and apply rooting hormone
  3. 3
    Plant in moist, porous medium
  4. 4
    Keep in a warm spot with indirect light until rooted

Materials needed:

Pruning shearsRooting hormonePorous potting mixProtective gloves
⏱ïļ Time: 3-4 weeks 📊 Success rate: medium 🗓ïļ Best season: Summer

How Big Does Cruel Vine Grow?

TLDR: Cruel Vine can reach up to 10.0m tall with Fast growth rate.

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Max height

10.0m

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Spread

5.0m

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Growth rate

Fast

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Foliage

Semi-evergreen

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Warning: Toxic Plant

This plant can be toxic if ingested. Keep out of reach of:

ðŸą Cats ðŸķ Dogs ðŸ‘ķ Children

Plant Uses

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Ornamental

Great for decoration

Is your plant showing symptoms?

Click on the symptom to discover possible causes:

What Diseases Commonly Affect Cruel Vine?

TLDR: Cruel Vine is susceptible to 6 known diseases. Monitor regularly for early detection.

Aphids

Medium

Aphids are small, soft-bodied, pear-shaped insects (1/16 to 1/8 inch long) that feed by sucking nutrient-rich sap from plants. They reproduce rapidly and can quickly weaken plants, causing distorted growth and transmitting plant viruses. Aphids come in various colors including green, black, red, yellow, brown, and gray. They secrete honeydew, a sticky substance that attracts ants and encourages sooty mold growth.

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Spider Mites

High

Spider mites are tiny arachnids (less than 1/20 inch long) related to spiders and ticks that feed on plant sap. They thrive in hot, dry conditions and can cause significant damage to ornamental and vegetable plants. During severe infestations, crop losses can reach 14% or higher as these pests disrupt vital plant processes including photosynthesis, carbon dioxide absorption, and transpiration.

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Root Rot

High

Root rot is a serious fungal disease that affects the root system of plants, causing them to decay and die. It is primarily caused by overwatering, poor drainage, or soil-borne fungi such as Pythium, Phytophthora, Rhizoctonia, and Fusarium. The disease thrives in waterlogged conditions where roots are deprived of oxygen, making them susceptible to fungal infection.

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Verticillium Wilt

High

Verticillium wilt is a soil-borne fungal disease caused primarily by the fungi Verticillium dahliae and V. albo-atrum. These pathogens infect plant roots and grow within the vascular tissues, blocking water and nutrient transport, resulting in wilting and eventual plant death. The disease affects over 350 plant species including vegetables, fruits, ornamental flowers, and trees. The fungi can survive in soil for more than 10 years as resistant structures called microsclerotia.

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Fun Facts

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The flowers trap moths overnight — insects get their proboscis stuck and are released at dawn

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Seeds have long silky hairs that allow them to travel miles on the wind

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The latex sap contains compounds similar to other plants in the Apocynaceae family

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It can smother the canopy of mature trees within just 2-3 years of growth

Frequently asked questions

Is Cruel Vine toxic?
Yes. The milky latex sap is a skin and eye irritant — always wear gloves when handling. Ingestion can cause illness, especially in children and pets.
How often should I water Cruel Vine?
Water every 7-10 days during the growing season. Allow the top inch of soil to dry between waterings. Reduce watering in winter.
How much sun does Cruel Vine need?
It needs full sun — at least 6 hours of direct sunlight daily. It tolerates partial shade but flowers best in full sun.
Why is it called Cruel Vine?
Because its flowers trap moths overnight. The moth inserts its proboscis to feed on nectar and becomes stuck until morning, when it can usually escape.
How do I propagate Cruel Vine?
The easiest method is by seed, collected in autumn and sown in spring. Semi-hardwood stem cuttings in late summer also work, though with lower success rates.

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Sources & References

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