Sansevieria Whale Fin Complete Care Guide

Sansevieria Whale Fin is a plant that you’ll notice from miles away. One single leaf is enough to catch any eye.

Scientific name: Dracaena Masoniana / Sansevieria Masoniana

Also called: Sansevieria Whale Fin, Sansevieria Mason Congo

Family: ASPARAGACEAE / DRACAENACEAE*

*it was shown that a sansevieria is actually a dracaena. I’m still fighting to accept this name so I’ll stick to sansevieria for this article. 😅

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care meter: 9/10

Whale Fin Sansevieria is very easy to care for. It doesn’t need much and is highly recommended for new plant parents.

light

Sansevieria Whale Fin thrives best in bright indirect light. It is very resilient and can survive a few good days of low light, but we don’t recommend making that a habit.

Lack of light will show on the new growth. If new pups grow up skinny, it means that your plant is lacking light. You can help it with artificial lights, that’s what I did. It does the job in case of darker spaces.

This plant can grow in medium light as well, but remember that the growth rate is influenced by the amount of light it receives.

watering

Sansevieria Masoniana likes very little water. Once every two weeks is great during summer. Once temperatures drop, slow down on watering and water once every 4-6 weeks (sometimes you can even stretch it to 2 months).

Check the soil every time you water it. It should feel completely dry. Excess water will damage the roots and cause root rot.

just a gorgeous Sansevieria Whale Fin

temperature

Sansevieria Whale Fin thrives in average temperatures. Something between 20-25°C is good enough.

Please don’t keep it in cold temperatures below 15°C. This causes damage on the leaf and leads to slow death.

humidity

Average humidity is best for Sansevieria Whale Fin. Anything between 40-60% should be fine. You don’t need to mist the plant, unless you want to remove the dust.

fertilizer

I fertilize my Sansevieria Whale Fin once a month during growing season.

The growth is more visible on the new leaves rather than the mother leaf. So, if you see pups showing during winter time, you can fertilize it. Once every two months will do the trick.

I alternate the NPK ratio from 10-10-10 to 10-20-10. Phosphorous (the P in NPK) is important for root development and sometimes Sansevierias can have these problems.

substrate

Sansevieria Whale Fin likes less water than other plants, that’s why the substrate should drain water fast. I use a mix of regular cacti soil, perlite and coco fiber. (in equal quantities)

An alternative can be regular potting soil with a lot more perlite (35/65). This will help water drain and keep the roots happy.

plastic versus terracotta

I had Whale Fin in both terracotta and plastic and it did well in both. No need to worry if you have the perfect pot in mind, Sansevieria Masoniana has no problems.

Make sure the pot has drainage holes and you’re all set. Also, try to choose a pot that is wide enough for this one leaf plant. I once received one in a small pot and caused the leaf to twist inwards. After I moved it in a better pot, it never quite recovered. It doesn’t bother me that much, but I think it’s something you might like to know.

Sansevieria Whale Fin in a terracotta mask (it’s a trap 😉)

repotting

It’s unlikely to repot your Sansevieria Masoniana often, but when the roots had conquered the pot, then it’s time to move out.

Another reason might be the soggy soil, any mix could go bad over time. Or maybe you received it with crappy soil. Then you can definitely repot it.

propagation

Best type of propagation is by division. Just wait for your Whale Fin to give you new pups and when they’re strong enough, you can separate them. Keep in mind that growing pups will look different than the mother plant.

These plants are propagated by leaf cutting. They are made to look like this on purpose, one single massive leaf. In the wild they look more like regular sansevierias with wider leaves.

If you want to achieve similar cuttings, wait for the pups to develop wider leaves. This requires great light conditions which are super hard to achieve indoors. Cut the leave and place it in water or directly in soil and you have your new plant.

new growth showing on Sansevieria Masoniana Whale Fin

pests

Sansevieria Whale Fin doesn’t get pests often. I find it very trustworthy. The only thing I could think of is maybe scale or mealy bugs. If that’s the case, acting fast is best.

toxicity

Sansevieria Whale Fin is not safe for pets. It can cause irritation, nausea or other side effects and it’s best to be kept away from furry friends.

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