Haworthia cuspidata Care Guide: Easy Tips for Growing the ‘Star Window Plant’

Are you looking to add a unique and easy-to-care-for succulent to your collection? The Haworthia cuspidata, also known as the Star Window Plant, is a fantastic choice. This captivating plant not only enhances the aesthetic appeal of your space but is also relatively simple to maintain. In this comprehensive guide, we’ll delve into everything you need to know about caring for the Haworthia cuspidata, from light and water requirements to propagation techniques and common issues. Let’s embark on this green journey to ensure your Star Window Plant thrives!

What is Haworthia cuspidata?

Haworthia cuspidata, commonly known as the Star Window Plant, is a small, rosette-forming succulent native to South Africa. This plant is prized for its translucent, triangular leaves that allow light to penetrate, giving it a unique, window-like appearance. Its compact size makes it perfect for indoor gardens, terrariums, and succulent arrangements.

Haworthia cuspidata for sale

Light Requirements

One of the key factors in ensuring the health of your Haworthia cuspidata is providing the right amount of light. This succulent thrives in bright, indirect light. While it can tolerate some direct sunlight, too much can cause the leaves to scorch. Ideally, place your plant near a window that receives filtered sunlight or use sheer curtains to diffuse the light.

Haworthia cuspidata

Watering Schedule

Proper watering is crucial for the well-being of Haworthia cuspidata. Overwatering is a common mistake that can lead to root rot. Follow these tips for an optimal watering routine:

  • Water Sparingly: Allow the soil to dry out completely between waterings. This usually means watering once every two to three weeks.
  • Check the Soil: Before watering, stick your finger about an inch into the soil. If it feels dry, it’s time to water.
  • Drainage is Key: Ensure your pot has drainage holes to prevent water from sitting at the bottom.
Haworthia cuspidata

Soil and Potting

Haworthia cuspidata prefers well-draining soil to prevent root rot. A cactus or succulent potting mix works best. When repotting, choose a pot that’s slightly larger than the current one to allow room for growth. Ensure the pot has drainage holes to allow excess water to escape.

Haworthia cuspidata

Temperature and Humidity

This succulent thrives in typical household temperatures ranging from 60°F to 80°F (15°C to 27°C). It can tolerate cooler temperatures but should be protected from frost. As for humidity, Haworthia cuspidata prefers dry to moderate conditions, making it well-suited for most indoor environments.

Haworthia cuspidata


Fertilizing Haworthia cuspidata can encourage healthy growth, but it should be done sparingly. Use a balanced, water-soluble fertilizer diluted to half strength. Fertilize once during the growing season (spring and summer). Avoid fertilizing in the fall and winter when the plant is dormant.

Superthrive succulent fertilizer haworthia cuspidata
Superthrive helps your plants… thrive!

When you’re rooting or transplanting your succulents and cacti, use SUPERthrive to help reduce the chance of transplant shock and grow a strong root system.

Propagation Methods

Propagating Haworthia cuspidata is relatively simple and can be done through offsets or leaf cuttings:

  • Offsets: These are small offshoots that grow at the base of the parent plant. Gently remove them and plant them in a new pot with succulent soil.
  • Leaf Cuttings: Cut a healthy leaf from the plant and allow it to callous over for a few days. Place the cut end in succulent soil and keep it slightly moist until roots develop.

Consider amending your soil with Bonsai Jack’s gritty mix to ensure your succulent soil drains quickly to prevent it from staying moist for too long. Source: Etsy

Common Problems and Solutions

Even though Haworthia cuspidata is a hardy plant, it can encounter some issues:

  • Overwatering: Leads to root rot. Ensure proper drainage and allow soil to dry out between waterings.
  • Pests: Watch out for mealybugs and spider mites. Treat infestations with insecticidal soap or neem oil.
  • Leaf Yellowing: Typically a sign of too much direct sunlight or overwatering. Adjust light exposure and watering habits.

The Haworthia cuspidata, or Star Window Plant, is a delightful addition to any plant collection. With its unique appearance and low-maintenance nature, it’s perfect for both novice and experienced gardeners. By following the care tips outlined in this guide, you’ll ensure your Haworthia cuspidata remains healthy and vibrant. Happy gardening!


1. How often should I water my Haworthia cuspidata?

Water it every two to three weeks, allowing the soil to dry out completely between waterings.

2. Can Haworthia cuspidata tolerate direct sunlight?

While it can handle some direct sunlight, too much can cause leaf scorch. It’s best to provide bright, indirect light.

3. What type of soil is best for Haworthia cuspidata?

Use a well-draining cactus or succulent potting mix to prevent root rot.

4. How do I propagate Haworthia cuspidata?

Propagate through offsets or leaf cuttings. Remove offsets from the base or cut a healthy leaf, allow it to callous, and plant it in succulent soil.

5. What should I do if my Haworthia cuspidata gets pests?

Treat mealybugs and spider mites with insecticidal soap or neem oil, ensuring to address the infestation promptly.