Sansevieria sinus-simiorum, commonly known as 'Malawi Bat' or 'Super Bat,' is an herbaceous perennial leaf-succulent plant. It is native to Malawi and possibly Zimbabwe. The type locality for this species is approximately 2 km south of Monkey Bay, Malawi. The plant was first described by Chahin and bears his name as a synonym.

The leaves of Sansevieria sinus-simiorum are upright to somewhat recurved, hard, and thick. They have a cylindrical shape with a massive "D" section, reaching lengths of 60-90 (-110) cm and widths of almost 5 cm. The leaves have a dark green to brownish-grey color, with shades of grey on young leaves and nearly uniform green on mature leaves. Unlike other "bat" Sansevierias, this species has impressed black-green lines running longitudinally on the front and back of the leaves. The leaf channel is not as deep, and the edges are less sharp, except at the leaf tip.

The plant produces purplish-white flowers that emerge close to the ground from the rhizomes. However, due to its slow growth, flowering may be relatively rare.

In cultivation, Sansevieria sinus-simiorum is considered easy to grow and requires minimal care. It is typically grown in containers and should be underpotted. A well-draining soil mix consisting of three parts loam to one part pumice is recommended. The plant is highly drought-tolerant and should be watered sparingly, about every other week during the growing season and once a month in winter. Fertilization with a balanced fertilizer is done once during the growing season.

Regarding lighting, Sansevieria sinus-simiorum can tolerate low light levels but thrives and flowers best when provided with bright light or even full sun. In mild to tropical climates, it prefers semi-shade or shade. It is not frost-hardy and should be protected from freezing temperatures. In frost-free areas, it can be grown outdoors on covered patios or under areas where it won't receive winter rainfall. The plant exhibits excellent heat tolerance.

Propagation of Sansevieria sinus-simiorum can be achieved through cuttings or divisions. Cuttings should be at least 10 cm long and inserted into moist sand. A rhizome will emerge at the cut edge of the leaf, indicating successful propagation.

Please note that the above information is based on the available details about Sansevieria sinus-simiorum up until September 2021, and there may have been additional research or updates since then.

Why people choose to buy Sansevieria plants:

1. Low Maintenance: Sansevieria plants are known for their resilience and ability to thrive in various conditions. They can tolerate low light levels, irregular watering, and periods of neglect. This makes them an ideal choice for individuals who may not have a green thumb or who have busy lifestyles.

2. Air Purification: Sansevieria plants are excellent air purifiers. They have the ability to remove toxins such as formaldehyde, benzene, and xylene from the air, improving indoor air quality. This makes them a popular choice for people who are conscious of their indoor environment and want to promote healthier living spaces.

3. Aesthetic Appeal: With their striking architectural shape and patterned leaves, Sansevieria plants make for visually appealing additions to any space. They come in a variety of sizes, leaf colors, and patterns, allowing individuals to choose a Sansevieria plant that complements their interior decor.

4. Indoor Versatility: Sansevieria plants are well-suited for indoor environments. They can thrive in low-light conditions, making them suitable for offices, apartments, and rooms with limited sunlight. Additionally, they are drought-tolerant and can withstand fluctuations in temperature, making them adaptable to different climates.

5. Symbolism and Folklore: Sansevieria plants are associated with various cultural beliefs and folklore. In some cultures, they are believed to bring good luck, prosperity, and positive energy to the household. This symbolism adds to their appeal as decorative plants and gifts for special occasions.

6. Pet-Friendly: Sansevieria plants are generally non-toxic to pets, which is an important consideration for pet owners when selecting indoor plants. While it's always best to monitor pets around plants, Sansevieria is considered a safer option compared to many other houseplants.

7. Easy Propagation: Sansevieria plants are relatively easy to propagate through division or leaf cuttings. This means that once you have one Sansevieria plant, you can easily grow more, making it a cost-effective option for expanding your plant collection or sharing with others.

8. And? What was your motivation? Did you already take one of TOMs FLOWer CLUB 100% organically grown sansevieria plants? 

First of my floral annual wall calendars for the year 2023 - SANSEVIERIA YEAR - with my own pictures of sansevierias from my plant collection is already online.

If you like to propagate VARIEGATA crosses of the Sansevieria, and want to keep the given cross in the new plants, then always propagate only the side shoots of the plants. Propagation by leaf cuttings also works with the Sansevieria, BUT the resulting plants will always be in the pure green basic form, i.e. not a Variegata cross.