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Description
whale fin sansevieria growth rate Sansevieria Masoniana Variegata (Whale Fin)The Sansevieria Masoniana 'Variegata' the Variegated Whale Fin is one of the most architecturally commanding houseplants in existence. Each leaf is a single, enormous, upright paddle up to 25 cm wide and 90120 cm tall striped and mottled in deep green, pale green, and vivid creamy yellow variegation, with subtle red tinged margins that flush more richly in bright light. Named after Maurice Mason, the British succulent collector who first brought the
The Sansevieria Masoniana 'Variegata' — the Variegated Whale Fin — is one of the most architecturally commanding houseplants in existence. Each leaf is a single, enormous, upright paddle — up to 25 cm wide and 90–120 cm tall — striped and mottled in deep green, pale green, and vivid creamy-yellow variegation, with subtle red-tinged margins that flush more richly in bright light. Named after Maurice Mason, the British succulent collector who first brought the species from the Democratic Republic of Congo, it is both a tribute to a collector and a plant worthy of collection. One leaf alone is a statement. One of the most indestructible plants in cultivation — and one of the most striking.
Light
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Medium to bright indirect light is ideal — the variegated form needs more light than the plain green to maintain vivid yellow patterning and grow at a reasonable rate. Tolerates low light but growth slows significantly and variegation dulls. Avoid prolonged direct harsh sun which scorches the leaf tips. The red margin tinting intensifies in brighter light — a beautiful response.
Watering
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Allow the soil to dry out completely before watering — then water thoroughly and empty the saucer. In summer, every 2–3 weeks. In winter, once a month or less. The leaves will show slight wrinkling when the plant is thirsty — this is the natural signal to water. Overwatering is the single most common cause of death for this plant. When in doubt, wait.
Humidity
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Average indoor humidity (40–60%) is perfectly fine — one of the most humidity-adaptable collector plants available. No humidifier needed. Keep away from AC vents that create extremely dry conditions, but otherwise this plant is unfussy about moisture in the air.
Growing Media
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Fast-draining cactus and succulent mix — or a standard potting mix cut with 40–50% coarse sand or perlite. pH 5.5–7.0. A shallow, wide, terracotta pot is ideal — it supports the large heavy leaf and drains quickly. Never use dense, moisture-retentive soil. Repot every 3–5 years or when pups crowd the pot significantly.
Feeding
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Very light feeder — balanced cactus or succulent fertilizer at half strength once a month in spring and summer only. Never feed in autumn or winter. Over-fertilizing causes salt burn and brown tips. Less is always more with this plant.
Soft, Mushy Base or Yellow Leaves
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Root rot from overwatering — the most common problem. Unpot immediately, remove all soft and blackened roots and rhizome sections, allow to dry for 24–48 hours, then repot in fresh fast-draining mix. Water sparingly going forward and ensure the pot drains completely.
Wrinkling Leaves
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The plant's natural signal for underwatering — water thoroughly immediately. Leaves should firm up within 24–48 hours. If the soil was already wet when wrinkling appeared, root rot may have damaged the plant's ability to uptake water — unpot and inspect the roots.
Brown Tips
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Low humidity, tap water mineral build-up, or inconsistent watering. Switch to filtered water, flush the soil with plain water to clear salts, and move away from extremely dry air sources. Trim brown tips neatly at a slight angle — they will not regrow.
Variegation Fading or New Growth Mostly Green
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Insufficient light — move to a brighter indirect position. The variegated form requires more light than the plain green to maintain vivid patterning. Note: any pups showing fully green leaves should be removed, as they will not develop variegation and will grow to outcompete the variegated parent.
Spider Mites or Mealybugs
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Wipe the large leaf surfaces with a damp cloth monthly — this removes dust and deters pests simultaneously. Spray with diluted neem oil or insecticidal soap every 5–7 days for 3 weeks if an infestation is found.
📋 Quick Plant Profile
| Botanical Name | Sansevieria masoniana Chahin. 'Variegata' (syn. Dracaena masoniana) |
| Common Names | Variegated Whale Fin, Variegated Shark Fin Snake Plant, Mason's Congo |
| Named After | Maurice Mason — British succulent enthusiast who first collected the species from the DRC |
| Family | Asparagaceae |
| Origin | Democratic Republic of Congo, Central Africa |
| Signature Feature | Single enormous paddle leaf — up to 25 cm wide, 90–120 cm tall; yellow-cream variegation; red margins |
| Photosynthesis Type | CAM — releases oxygen at night; ideal bedroom plant |
| Light | Medium to bright indirect; tolerates low light; variegation needs good light to stay vivid |
| Watering | Soil completely dry between waterings; wrinkling leaves = water signal; every 2–3 weeks in summer |
| Humidity | Average indoor humidity fine (40–60%); no humidifier needed |
| Temperature | 18°C–27°C; tolerates brief drops to 10°C; no frost |
| Mature Leaf Size | Up to 25 cm wide, 90–120 cm tall; spreads by rhizome pups |
| Growth Rate | Slow — patience rewarded with longevity; lives for decades |
| Propagation | Pups only — leaf cuttings revert to plain green; only pups carry the variegation |
| Pot Type | Shallow, wide, terracotta preferred — supports large leaf and drains fast |
| Ideal For | Bedrooms, Living Rooms, Offices, Collectors, Beginners and Experts Alike |
| Care Level | Easy — the main rule is: do not overwater |
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