Use SUMMER26 for 10% off all orders

Euphorbia Monstrose Cactus - Euphorbia submammillaris

Rare

Euphorbia Monstrose Cactus - Euphorbia submammillaris

Notify me when this product is available:

Size
Style

Use code SUMMER26 to get 10% off all orders
Green thumb guarantee: If your plant care goes haywire within 6 months of your order, claim a $15 gift card for your plant.

  •   Euphorbia Monstrose Cactus - Euphorbia submammillaris is a rare clumping succulent from the Euphorbia genus, native to the arid regions of South Africa. It evolved in rocky, well-drained terrain with intense sun and minimal rainfall, making it a true drought-tolerant architectural succulent. It is sought by collectors for its unusual form.

      It forms dense, upright clusters of small, ribbed, grey-green stems covered in spiraling tubercles and short spines. The monstrose growth pattern means each cluster develops with irregularity, so every plant is uniquely shaped and visually distinct on any shelf or windowsill.

      Euphorbia submammillaris produces small, understated flowers typical of the Euphorbia genus, though it is grown primarily for its remarkable architectural form rather than blooms. The presence lies in its year-round structural beauty, which deepens and becomes more defined as the clumping clusters grow denser over time.

      Move it to a sunny spot indoors or outside for summer, though it needs cover from rain and protection when temperatures drop. You can leave it up to ten days without water. Keep it on a high shelf out of reach, as the sap causes skin and paw irritation and cats and dogs should not nibble or eat the plant.

  •   Euphorbia Monstrose Cactus - Euphorbia submammillaris grows well in bright indirect light to full direct sun, though intense south-facing window exposure can scorch stems in summer.

      Water it deeply every 2-3 weeks in summer, cutting back to once a month or less in winter when the plant is resting.

      Euphorbia submammillaris does best in a fast-draining cactus and succulent mix amended with extra perlite or coarse grit.

      It prefers temperatures between 60-95°F and should be brought indoors before temperatures drop near freezing.

      Euphorbia submammillaris is a slow to moderate grower that benefits from a balanced, diluted succulent fertilizer once monthly during spring and summer.

      It is hardy in USDA zones 9-11 and tolerates minimum temperatures down to around 25-28°F with brief exposure only. It grows outdoors year-round in California, Texas, Arizona, Florida, Hawaii, Nevada, Louisiana, Georgia, South Carolina, Alabama, and Mississippi. It can also grow outdoors with seasonal protection in the Oregon coast, parts of New Mexico, and coastal North Carolina.
  • Q: How often should I water Euphorbia Monstrose Cactus - Euphorbia submammillaris?
    A: Every 2-3 weeks during spring and summer, letting the soil dry completely between waterings. In winter, reduce to once a month or less. Overwatering causes root rot faster than underwatering in this drought-tolerant species.

    Q: Is it safe around pets?
    A: Euphorbia Monstrose Cactus - Euphorbia submammillaris has sap that causes skin and paw irritation on contact. Cats and dogs should not nibble or eat the plant; keep it on a high shelf out of reach.

    Q: What window direction works best for Euphorbia submammillaris?
    A: East or west-facing windows provide bright light without peak summer scorch. South-facing windows can burn the stems in summer heat, so move it back from the glass or filter the light during that season.

    Q: How fast does it grow?
    A: Euphorbia submammillaris is a slow to moderate grower, gradually developing its signature dense, clumping clusters over several years.

    Q: Can Euphorbia submammillaris go outside in summer?
    A: Yes, it loves spending summer outdoors in a warm, sunny spot and can stay outside into autumn in mild climates. Provide cover from rain and bring it back indoors before temperatures drop significantly.

    Q: Is this drought-tolerant succulent beginner-friendly?
    A: Euphorbia submammillaris grows easily with minimal watering once established. You can leave it unwatered for extended periods, making it well-suited to new collectors interested in rare euphorbias.

  • Hand-Packed with Care: Using recyclable wraps and crinkle paper, we ensure every succulent arrives healthy and in perfect condition.

    Processing: Shipped within 3-5 business days (Mon-Fri) year-round.

    Urgent Orders: Message us for shipping upgrades (additional cost).

    Destinations: We ship succulents to all 50 US states and territories, with the exception of Guam.

    Cold Weather: If under 40°F, please add a Heat Pack to your order for safety.

    🌵 For Succulents
    When your package arrives, you may notice a bit of loose soil in the box. This is completely normal during shipping.
    Please remove your plants from their packaging right away and follow the care instructions included with your order. Succulents prefer to dry out between waterings, so only water when the soil is completely dry.
    Succulents are resilient plants and typically recover quickly once they settle into their new environment. Give them a few days to adjust before placing them in direct sunlight, and avoid fertilizing right away.
    *** We pack carefully to protect each plant during transit, so larger orders may arrive in multiple packages

  • 🌿 14-Day Satisfaction Guarantee (Replacement or Refund)
    From arrival to long-term care, we’ve got you covered. We carefully pack every plant so it arrives happy and healthy. If something doesn’t look right when it gets to you, don’t worry, we’ll make it right.
    How it works:
    - Reach out within 14 days of delivery
    - Send us your order number and a couple of photos of your plant(s)
    - We’ll take care of you with a replacement or a refund

    👍 Green Thumb Guarantee (6-Month Extended Coverage)
    Still getting the hang of plant care? You’re not on your own. For up to 6 months from your order date, if your plants show serious decline or fail to survive, we’re here to help. You can claim a gift card to help you continue your plant journey.
    How it works:
    - This coverage continues after the 14-day guarantee
    - Gift card value starts at $15, with the opportunity for more based on your order
    - Total gift card value is capped at $50 per order
    - One claim per order or subscription
    - Gift cards are valid for 6 months from the date of issue
    - Just send your order number and a few photos of your plant(s) to support@succulentsbox.com, and we’ll take it from there.

  • Plants that make your space feel more alive, with support you can count on every step of the way.

    • 1,000+ Plants to Explore
    Including 600+ succulents, 400+ houseplants, and 70+ air plants and arrangements, all carefully selected

    • Made to Brighten Your Space

    Plants chosen to bring natural beauty, calm, and a little joy into your everyday life

    • Easy to Treat Yourself or Someone Else
    Choose from 30+ themed gift boxes or enjoy a 1, 3, 6, or 12-month subscription

    • 14-Day Satisfaction Guarantee
    If something isn’t right, just send your order number and photos and we’ll make it right

    • 6-Month Green Thumb Coverage
    Extra support if your plant shows serious decline or does not survive, with photo-based claims

    • Friendly, Real Support
    Our team is here whenever you need help along the way

    We’re building the most trusted place to shop plants online, with variety you’ll love and support you can rely on.