Cactaceae
Echinopsis tubiflora (Sea Urchin Cactus) Care Guide
Echinopsis tubiflora
Give this cactus abundant direct sun, a very well-draining mineral mix, and let the soil dry out completely between waterings. It thrives on neglect during the cool months, when watering should be reduced to almost nothing, and rewards a bright, dry environment with dramatic short-lived blooms in late spring and summer.
Every 14 days
Direct sun
10° - 35°C
20% - 40%
Categories
What is Sea Urchin Cactus?
Sea Urchin Cactus (Echinopsis tubiflora) is a easy-care plant from the Cactaceae family. Echinopsis tubiflora, popularly known as the Sea Urchin Cactus (also called the Easter Lily Cactus), is a globular to short-columnar cactus native to the highlands of Bolivia and northern Argentina. Its dark green, ribbed stem is armed with clusters of pale, brown-tipped spines and produces spectacu...
Sea Urchin Cactus grows up to 75cm, spread of 20cm, watering every 14 days, 10°C â 35°C, 20â40% humidity. It is suitable for indoor environments and safe for pets.
Unlike many tropical plants, Sea Urchin Cactus tolerates watering mistakes. Best for beginners. Unlike many popular species, Sea Urchin Cactus is safe to keep around pets. Without adequate drainage, root rot can develop within 28 days.
How to Care for Sea Urchin Cactus?
TLDR: Sea Urchin Cactus needs Direct sun, watering every 14 days, and temperatures between 10-35°C with 20-40% humidity.
How Often Should You Water Sea Urchin Cactus?
Water deeply only when the top few centimeters of soil are completely dry, roughly every 10-14 days in the growing season. Cut back to once a month or less in winter to prevent root rot.
How Much Light Does Sea Urchin Cactus Need?
Provide at least 6 hours of bright, direct sunlight daily, ideally in a south-facing window. Acclimate gradually to full sun to avoid scorching, and offer light afternoon shade during the hottest summer days.
What Is the Best Soil for Sea Urchin Cactus?
Use a gritty, fast-draining cactus or succulent mix amended with extra perlite or pumice. Avoid heavy, water-retentive potting soils that can lead to rot.
What Pot Should You Use for Sea Urchin Cactus?
A shallow, unglazed terracotta pot with generous drainage holes is ideal, since the porous clay helps excess moisture evaporate and matches this cactus's shallow root system.
Care Schedule
Fertilize
Every 30 days
Repot
Every 730 days
What Is Sea Urchin Cactus and Where Does It Come From?
Echinopsis tubiflora, popularly known as the Sea Urchin Cactus (also called the Easter Lily Cactus), is a globular to short-columnar cactus native to the highlands of Bolivia and northern Argentina. Its dark green, ribbed stem is armed with clusters of pale, brown-tipped spines and produces spectacular funnel-shaped white flowers with a pale green throat that open at night and last only a day or two. As the plant matures it tends to offset, forming dense clumps that make a striking architectural statement in any dry garden or sunny windowsill.
How to Propagate Sea Urchin Cactus?
Offset (pup) division
Always use sterile tools and let cuts dry fully before planting to prevent rot.
- 1 Wait until an offset (pup) is at least a few centimeters wide and has its own small root nub.
- 2 Use a clean, sharp knife to separate the pup from the mother plant at its base.
- 3 Let the cut surface callous over in a dry, shaded spot for 3-5 days.
- 4 Place the callused offset on top of dry cactus mix and mist lightly until roots form.
- 5 Begin normal watering once roots are established, usually after 3-6 weeks.
Materials needed:
Seed propagation
Seedlings grow slowly; be patient and keep the mix lightly moist, never soggy, during the first months.
- 1 Sow fresh seeds on the surface of a sterile, well-draining seed mix.
- 2 Cover the container with plastic wrap or a lid to keep humidity high.
- 3 Keep at 21-27C with bright, indirect light until germination.
- 4 Gradually increase ventilation over several weeks once seedlings appear.
- 5 Pot up seedlings individually once they are large enough to handle.
Materials needed:
How Big Does Sea Urchin Cactus Grow?
TLDR: Sea Urchin Cactus can reach up to 75cm tall with Slow growth rate.
Max height
75cm
Spread
20cm
Growth rate
Slow
Foliage
Evergreen
Plant Uses
Ornamental
Great for decoration
Is your plant showing symptoms?
Click on the symptom to discover possible causes:
What Diseases Commonly Affect Sea Urchin Cactus?
TLDR: Sea Urchin Cactus is susceptible to 4 known diseases. Monitor regularly for early detection.
Root Rot
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.
Spider Mites
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.
Mealybugs
Mealybugs are small, soft-bodied insects covered with a white, waxy, cottony material. They are common pests of houseplants and outdoor plants in mild climates. These sap-sucking insects feed on plant tissue, causing damage, stunted growth, and can lead to plant death if left untreated. They produce sticky honeydew which attracts sooty mold.
Sunburn (Sun Scorch)
Sunburn or sun scorch is an environmental condition that occurs when plants are exposed to intense, direct sunlight beyond their tolerance level. This causes the breakdown of chlorophyll in the leaves, resulting in bleached, dried, and damaged foliage. The damage can happen rapidly, sometimes within just a few hours of exposure.
Meaning & Symbolism
Like many desert cacti, Echinopsis tubiflora is often seen as a symbol of endurance and resilience, thriving where little else can survive. Its brief, luminous night-blooming flowers also carry a symbolism of fleeting beauty and the importance of appreciating rare, transient moments.
Fun Facts
Its funnel-shaped flowers open only at night and typically wilt by the following afternoon.
The species name "tubiflora" refers to the long tubular shape of its flowers.
Mature plants often form dense clumps of dozens of offsets around the original stem.
Frequently asked questions
How often should I water Echinopsis tubiflora?
Is Echinopsis tubiflora toxic to cats and dogs?
Why won't my Echinopsis tubiflora flower?
Can Echinopsis tubiflora be grown outdoors?
Compare with similar plants
| Attribute | Difficulty | Light | Watering | Pet Safe |
|---|---|---|---|---|
| Field Maple | Easy | Bright indirect | 14d | â |
| Silver Birch | Easy | Direct sun | 14d | â |
| Common Blanketflower | Easy | Direct sun | 10d | â |
| Cushion Bush | Easy | Direct sun | 14d | â |
Choose & Compare
Sources & References
- PictureThis - Echinopsis tubiflora Care Guide (ES)
- Greg App - Echinopsis tubiflora Plant Care Guide
- Gardenology.org - Echinopsis tubiflora
- Wikipedia - Echinopsis oxygona (taxonomic synonym)
- ASPCA - Easter Lily Cactus Toxicity
- Botanico Hub - Echinopsis tubiflora
- Diario Prime - Echinopsis tubiflora (PT)
