A Full Care Guide of Windowed Haworthia & Non-windowed Haworthia

Haworthia is native to Southern Africa, with South Africa as its core distribution area. There are around 100 Haworthia species in total, far fewer than those of the Crassulaceae family. These succulents are hugely popular for their ability to thrive well in pure indirect filtered light, and they even have a higher chance of developing variegation in such environments. This article will also introduce common and well-known Haworthia varieties.

Haworthias are divided into two major categories based on leaf morphology: windowed and non-windowed types. Windowed Haworthias feature highly translucent leaves and crystal-clear leaf windows, exuding a soft and elegant charm. Classic varieties include Haworthia cooperi (Jade Dew), Haworthia truncata (Jade Fan), Haworthia retusa, and Haworthia maughanii. Generally speaking, windowed Haworthias are priced slightly higher than non-windowed ones.

In contrast, non-windowed Haworthias are defined by their rigid, firm leaves, white warty tubercles and distinctive stripes, presenting a tough and rugged temperament. Standout varieties in this category include Haworthia marginata, Haworthia limifolia, Haworthia reinwardtii, and Haworthia attenuata (Zebra Haworthia).

Based on these two leaf forms, we will share a complete care guide for Haworthia succulents below.

How to Care for Haworthia Succulents

Light

Haworthias grow vigorously under regular indirect filtered light and do not require full sun exposure. Prolonged intense direct sunlight causes damage: non-windowed varieties may lose their green pigment and develop dry, withered leaf tips. For windowed Haworthias, the leaf windows transmit far more light than other leaf tissues; excessive light will reduce the translucency of fleshy leaves and turn foliage dull grey. This trait is highly similar to some succulents in the Aizoaceae family.

It is recommended to place them in spots with filtered soft light or east-facing windows. If using grow lights, maintain a light intensity of 7,000–8,000 LUX. The hanging height of grow lights varies by model and brand; using a plant light meter is the most scientific way to adjust lighting conditions.

Pots & Soil

Haworthias have a robust root system with thick taproots plus long, straight fibrous roots. Windowed Haworthias in particular develop fleshy, radish-like storage roots that excel at storing water and nutrients. Thus, small ordinary clay pots are not suitable, as they restrict root growth and stunt development. To support healthy growth, choose pots with a minimum height of 5.91 inch / 15 cm to allow ample space for roots to stretch freely.

Thanks to their vigorous roots, the soil needs a granular content of more than 60%. For humid or poorly ventilated growing spaces, increase the ratio to 70% gritty substrate. Special attention for windowed Haworthias: they have delicate soft fleshy roots that require soft, breathable soil. Avoid hard, inflexible materials such as maifanite, green zeolite and lava rock, which will hinder root development. Akadama and Kanuma soil are the most ideal granular substrates for all Haworthia.

Watering

Compared with other succulents, Haworthias need slightly more water. Windowed Haworthia varieties have more stomata on their soft foliage, making them prone to water loss. Without sufficient water, their epidermal cell renewal slows down, resulting in dull foliage and reduced translucency. Sufficient water keeps their leaves plump, glossy and crystal clear. Windowed Haworthias prefer high air humidity and can be grown in sealed mini greenhouses or under covered mineral water bottles for humidity cultivation.

Non-windowed Haworthias are more drought-tolerant, with longer watering intervals recommended. They do not require humid sealed growing conditions and thrive perfectly in well-lit indirect light environments.

Temperature

Spring and autumn are the peak growing seasons for Haworthias, and they grow best in mild, cool conditions during these periods. When summer temperatures rise above 86℉ / 30°C, move your Haworthias to a cool, well-ventilated area and reduce watering. High heat combined with excess moisture will trigger leaf rot and mealybug infestations. To help them survive summer, simply water a small amount along the inner pot wall when necessary.

Once winter temperatures drop below 50℉ / 10°C, Haworthias enter a semi-dormant state. Temperatures under 41℉ / 5°C bring a high risk of frost damage. Stop watering entirely during dormancy and provide ample indirect light to prevent etiolation and faded leaf translucency.

Humidity

Haworthias have different humidity needs by type: Non-windowed Haworthias have thick, rigid leaves with strong water retention and drought resistance. They adapt well to dry to moderate humidity, with an optimal relative humidity of 40%–60%. Windowed Haworthias feature soft, juicy leaves with iconic leaf windows. They are sensitive to rapid water evaporation and thrive in higher humidity (50%–70%), which keeps foliage lush, glossy and in prime condition.

Fertilization

Non-windowed Haworthias are highly tolerant of poor soil and slow-growing. One fertilization session in spring and one in autumn fully meet their nutritional needs. Fertilize only during the active growing seasons (spring & autumn). Stop all fertilization in hot summer dormancy and cold winter periods. Avoid direct contact between fertilizer and leaves or roots. Do not fertilize newly potted or repotted plants during the 1–2 month acclimatization period.

Windowed varieties have juicy, translucent leaves and are far more sensitive to fertilizer. Over-fertilization leads to etiolation, dull foliage, and root rot. Apply fertilizer only 1–2 times a year, mainly in spring, with a small supplemental dose optional in early autumn. Cease fertilization completely in the hot summer.

Alternative tip: If you are unsure about the timing of fertilization, you can skip it entirely. Haworthias grow slowly, even in nutrient-poor soil; the only downside is slightly looser, less compact plant shapes.

Propagation

Haworthias feature diverse propagation methods, primarily propagated by division and seed sowing. Certain varieties can also be propagated via leaf cuttings or beheading. However, Haworthia's thick fleshy leaves are hard to remove intact, and it is difficult to preserve complete growth points. As a result, the success rate of leaf propagation is much lower than that of other succulents.

For beheading propagation, make a clean, flat cut on the stem and dust the wound with carbendazim powder or cinnamon powder to avoid infection. Only proceed with planting the "head" once the wound is fully dry; rotting and rooting failure may occur.

Seeds sowing is the most common propagation method for Haworthia. It is important to note that Haworthias rely on cross-pollination, meaning flowers must be pollinated by different non-related Haworthia varieties.

Botanical characteristics of Haworthia flowers: Inflorescences are racemose, spicate, or paniculate; flowers are bisexual, with fused tubular bases that are straight or slightly curved and swollen at the bottom. Each flower has 6 stamens and 1 pistil.

When two different Haworthia plants bloom, gently peel back the petals with tweezers, remove the stamens together with their filaments, and rub pollen onto the pistil. Pollination is highly suggested to occur at noon when pollen vitality is highest; repeat the process the next day to boost success rates. After pollination, move the plant to a shaded spot to avoid direct sunlight, which can deactivate pollen and wither the pistil. Three to four days later, successfully pollinated flowers will develop swollen ovaries, and seeds will fully mature in around 1.5 months. Harvest the entire seed pod once the top splits open. We will not cover detailed seed sowing steps here—stay tuned for our dedicated Haworthia seeds sowing guide in a future blog post.

Pests & Diseases

Pests

Whitefly: One of the most common Haworthia pests, prevalent in poorly ventilated spaces. Control with yellow sticky traps or botanical insecticides.
Spider mites: Occur occasionally on windowed Haworthias, especially in dry, sweltering conditions.

Nematodes: Attack underground roots, triggered by contaminated soil or overwatering.
Mealy bugs: Less common, but easily transmitted from infected neighbouring succulents to non-windowed varieties like Zebra Haworthia. Wipe the bugs off with alcohol-dampened cotton swabs.

Fungus gnats & root maggots: Breed in overly moist soil. Prevent with topdressing soil cover, yellow traps, or routine preventative insecticide treatment.

Diseases

Root rot & leaf rot: The most prevalent issues, caused by overwatering, compact impermeable soil, and poor ventilation. Outbreaks peak in hot, humid summers and cold, damp winters.

Black rot & mushy rot: Mainly affects windowed Haworthias such as Jade Dew. Symptoms include water-soaked translucent leaves, blackened leaf bases, and total plant decay in severe cases.

Sunscald: Not a fungal or pest disease, yet common with direct intense sunlight. Non-windowed Haworthias develop yellow, dried leaf tips. These prove that the proper shading in hot summer is essential.

Top 5 Beginner-Friendly Haworthia Varieties

Haworthia attenuata (Zebra Haworthia)

The most iconic starter variety, with dark green leaves marked by bold white zebra stripes. It is extremely adaptable, shade-tolerant, drought-resistant, and stays healthy with minimal care in indoor indirect light.

Haworthia arachnoidea (Cobweb Aloe / Spider Nest)

A lovely compact rosette covered in fine, web-like white bristles. It is low-maintenance, slow-growing, and perfect for desktops, tolerating a wide range of light conditions with ease.

Haworthia bayeri

A visually stunning variety with deep green leaves, white vein patterns, and soft reddish leaf tips. It is undemanding, keeps its good looks year-round, and is a great addition to any small succulent collection.

Haworthia margaritifera

Easily recognized by pearl-like white tubercles scattered across its thick leaves. It is very forgiving for beginners, drought-tough, and needs only basic care to thrive.

Haworthia bolusii

A delicate yet hardy species with thin, fuzzy leaves forming neat, rounded rosettes. It prefers bright indirect light, grows slowly, and makes an excellent low-effort indoor ornamental plant.

For more popular and stunning Haworthia selections, check out this blog: Top 15 Popular Haworthia You Need to Have

Conclusion

Growing Haworthia succulents is an endlessly rewarding and enjoyable hobby. These charming, compact plants bring beauty to any indoor space with their diverse leaf forms, textures, and elegant appearances. Beyond simple care and appreciation, many enthusiasts now take part in hand-pollination and cross-breeding to create new, unique Haworthia varieties. 

This creative journey not only brings deep personal satisfaction and a strong sense of achievement but also opens up opportunities for added economic value as rare and new cultivars gain popularity among collectors. More and more plant lovers are joining this vibrant community, sharing their creations, exchanging experiences, and exploring the endless possibilities of Haworthia breeding. Whether you are a beginner starting with easy varieties or an experienced grower experimenting with hybridization, Haworthia will continue to surprise and delight you with its quiet beauty and endless potential.

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