Haworthia cuspidata - Star Window Plant
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QUESTIONS & ANSWERS
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Highlights
Haworthia cuspidata or Star Window Plant (Haworth): Bright green rosette of thick and fleshy leaves. The leaves are marked by a mottling of translucent "leaf windows" that let sunlight in and help the plant tolerate low light conditions. It can grow large if its offsets are removed and the mother plant has room to spread. The authenticity of this species is debated by botanists, with some arguing that it is an intermediate between H. cymbiformis and H. retusa.
Haworthia are able to tolerate low, indoor light, making them excellent houseplants, even for beginners. They are particularly easy to grow and rarely affected by common succulent pests and diseases. Strong, drought-tolerant roots will grow if they have great drainage and infrequent water. Pick deep containers with drainage holes and a gritty, well-draining soil that is 50% to 70% mineral grit (coarse sand, pumice, or perlite). Water deeply enough for water to run out the drainage hole and allow the soil to completely dry before watering again.
This genus tolerates high heat by slowing down and eventually going dormant in the peak of summer. This means that, unlike other succulents, it is important not to over-water or fertilize during summer dormancy and water a bit more frequently in the winter growing season. Haworthia are slow growers and tend to stay small in pots, but they will produce new offsets in clumps around their bases. These offsets can be left to develop into a dense clump or pulled off and transplanted.
Product Size
2.0" Pot
Current Primary Color
Green
Bloom Color
White Bloom
Grow Zone (Hardiness)
Zone 10 (30F)
Recommended Light Conditions
Filtered / Partial Sun, Low Indoor Light
Maximum Height
3"-5"
Maximum Rosette Size
5"-6"
Growth Habit / Shape
Loose Rosette
Seasonality
Summer Dormant Partial
Special Characteristic
Hard to Kill, Slow Grower, Pet Safe
THIS PLANT IS HARDY IN ZONES 10+
10
WHAT IS MY HARDINESS ZONE?
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Questions & Answers
Popular Questions
• Staff Answer
It really depends on your environmental conditions. Haworthia can slow down (partial dormancy) or temporarily stop growing (full dormancy) in response to high heat and drought. This is their natural cycle in the wild, but it doesn't always translate perfectly in cultivation, especially if you grow your Haworthia indoors.
• Staff Answer
H. cuspidata has much smaller leaf windows, the translucent part that almost looks like water, than H. retusa f. fouchei.
H. retusa f. fouchei also has tiny teeth on the margins and keel on the leaf while H. cuspidata does not.
Also, in all likelihood, H. retusa f. fouchei has more offsets around the base of the plant than H. cuspidata, which tends to stay mostly solitary at this age.
If you have anymore trouble distinguishing between the two, go ahead and email pictures of them both to info@mountaincrestgardens.com.
H. retusa f. fouchei also has tiny teeth on the margins and keel on the leaf while H. cuspidata does not.
Also, in all likelihood, H. retusa f. fouchei has more offsets around the base of the plant than H. cuspidata, which tends to stay mostly solitary at this age.
If you have anymore trouble distinguishing between the two, go ahead and email pictures of them both to info@mountaincrestgardens.com.
• Staff Answer
Yes! You can find grow light specs and recommended types here on our Guide to Grow Lights for Succulents.
Source: https://mountaincrestgardens.com/blog...
Source: https://mountaincrestgardens.com/blog...
• Staff Answer
The only issue with porch shades is that they're frequently too shady. If you erected some kind of shade using shade cloth designed for plants, that could help. You wouldn't need it to be too shady, roughly 30%-40% would do the trick.
However, 65°F isn't too cold for many succulents. Especially once the radiant heat from direct sunlight in an south facing window is factored in, that you wouldn't feel in the air. The issue may have more to do with humidity than temperature. Looking at the relative humidity predictions for Stone County (just as an example) it's suppose to get over 70% in the near future! This makes watering more tricky as plants don't dry out nearly as quickly as they should and rot can set in as a result.
If your house is less humid than it is outdoors, then moving them inside may do them more good than shade cloth outside. In fact, shade cloth may only further prolong drying and exacerbate the problem.
However, 65°F isn't too cold for many succulents. Especially once the radiant heat from direct sunlight in an south facing window is factored in, that you wouldn't feel in the air. The issue may have more to do with humidity than temperature. Looking at the relative humidity predictions for Stone County (just as an example) it's suppose to get over 70% in the near future! This makes watering more tricky as plants don't dry out nearly as quickly as they should and rot can set in as a result.
If your house is less humid than it is outdoors, then moving them inside may do them more good than shade cloth outside. In fact, shade cloth may only further prolong drying and exacerbate the problem.
• Staff Answer
Your best bet are low light succulents. They'll get some morning sun but no more. Click the link below to see all our low light succulents.
Source: https://mountaincrestgardens.com/expl...
Source: https://mountaincrestgardens.com/expl...
• Staff Answer
Shop Succulent Soil Here
Succulents need grittier soil than other plants because they are adapted to dry conditions and store water in their leaves. Regular potting soil mixes stay damp for long periods of time, which can cause rot in succulents. Instead, use a sandy, well-draining soil so you can water thoroughly without leaving your succulent in standing water.
IN POTS…
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• Staff Answer
Our plants can be transplanted immediately upon arrival.
If you want to wait to transplant, they can remain in their original containers for up to a month. If the pots came in a plastic carrier tray, remove the pots from the carrier tray prior to the first watering.
Keep the plants indoors near a sunny window or outdoors under a roof (only if outdoor temperatures stay above your succulent's minimum hardiness temperature). Water only after the soil is fully dry by drenching from above with a faucet, hose, or watering can. Gently shake excess water from the leaves and allow containers to drain completely.
• Staff Answer
Fertilizing is not necessary, but it is a good option for succulent growers who want to encourage faster, larger growth. It can be used on mature plants with established roots. Only fertilize in the growing season (spring and summer for most varieties) to avoid weakening or burning dormant plants. Use a light touch and make 2-3 applications of low-Nitrogen, diluted fertilizer each year (N-P-K ratio around 5-10-10). You can find specially-formulated cactus / succulent fertilizers in most garden centers or go organic with compost tea or bone meal.
Example: Miracle-Gro Quick Start, diluted to half strength
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Customer Reviews
4.4
Out of 5.0
Overall Rating
80%
of customers that buy this product give
it a 4 or 5-Star rating.
August 19, 2024 by RW (Ct, United States)
“Very nice plant.”
A Beauty
March 19, 2024 by Marian D. (Ohio, United States)
“Love this plant. It arrived in perfect condition. It's leaves are so large, it looks like they could explode!”
October 27, 2023 by William P. (United States)
“The plant came with a healthy root system and was the perfect size for using on a small shelf in one of my rooms without an available window to add a little green to the space.”
