Whale fin snake plant guide
Dracaena masoniana, also called Sansevieria masoniana, shark fin snake plant, Mason's congo
Published 2026-11-08
Quick care
- Light
- Low
- Water
- When the soil is dry all the way down
- Humidity
- Dry room air is fine
- Temperature
- 15 to 29°C (60 to 85°F). Keep above 10°C (50°F).
- Soil
- Cactus and succulent mix
- Feeding
- Half-strength fertilizer two or three times in spring and summer
- Pets
- Toxic to cats and dogs if chewed, like all snake plants
- Difficulty
- Easy
- Mature size
- Leaves 60 to 120 cm (2 to 4 ft) tall
- Propagation
- Division or leaf cuttings
- Where to buy
- Plant shops
This page covers what makes whale fin snake plant different. For light, water, soil, pests, and the rest, read the snake plant care guide.
What it is
Whale fin snake plant is a different species from the common snake plant. It is Dracaena masoniana. Each stem grows one or two huge, flat, paddle-shaped leaves, up to 25 cm (10 in) wide. The leaves are dark green with faint lighter mottling. Select-A-Plant notes it is rare and grows slow.
How to tell it apart
| Plant | Leaves | The tell |
|---|---|---|
| Whale fin snake plant | One or two huge, wide, flat leaves | Paddle shape, far wider than any other |
| ‘Moonshine’ snake plant | Broad, pale silver-green | Silver color and narrower leaves |
| ‘Laurentii’ snake plant | Tall, narrow, yellow edges | Several narrow leaves per plant |
Care differences
It grows slow, often one new leaf a year. Do not expect a full pot fast.
It sends out rhizomes sideways under the soil and pushes up new leaves away from the first one. Use a wide, shallow pot rather than a deep one.
Water when the soil is dry all the way down, like any snake plant.
Grow it by division
Select-A-Plant recommends division to keep the single-leaf look. When a new leaf comes up from a rhizome, cut that rhizome from the parent and pot it on its own. Leaf cuttings work, but they take months and the pups often look different.
Pet safety
Like all snake plants, whale fin contains saponins. It is toxic to cats and dogs if chewed.
Buying it
Whale fin is sold at plant shops and online, and now and then at garden centers. It costs more than common snake plants because it grows slow. Look for a firm, wide leaf with no soft spots at the base. Some sellers call a wide-leaf ‘Laurentii’ a whale fin. A true whale fin leaf is far wider than it is thick.