
by Plant Circle
Alocasia Care Tips
Curious why your Alocasia keeps struggling? Our founder Monika shares her hard-earned tips for growing these tropical stunners indoors—hint: it’s all about airflow and the right mix.
Across the EU
60€ in Germany | 100€ Europe*
Founded 2017 in Berlin
Across the EU
60€ in Germany | 100€ Europe*
Founded 2017 in Berlin
Across the EU
60€ in Germany | 100€ Europe*
Founded 2017 in Berlin
Alocasia cyrtosperma johnstonii 'Black Jack' | Fast EU shipping | Grown with love in the EU | Not pet-safe
Summary: With its almost black, deeply veined leaves and fierce upright stance, Black Jack transforms any room into a lush, tropical escape with minimal effort.
Thrives in bright, indirect light. Avoid direct midday sun to prevent leaf scorch. Ideal for east or north-facing windows, or a bright spot with filtered light.
Keep soil evenly moist but not soggy. Loves high humidity (over 60%) – use a humidifier or place near other plants to boost ambient moisture.
Use a chunky, well-draining aroid mix with orchid bark, perlite, and coco coir. Repot every 1–2 years to support rapid rhizome growth.
Toxic if ingested. Keep out of reach of pets and small children.
Grows from rhizomes that can be divided during repotting in spring. Each division should have at least one growth point for successful propagation.
May go semi-dormant in winter with slowed growth. Reduce watering accordingly and keep above 15°C to maintain foliage health.
Watch for spider mites and thrips, especially in dry conditions. Regularly wipe leaves to prevent dust build-up and pest hiding spots.
Native to Southeast Asian rainforests, Alocasia cyrtosperma johnstonii ‘Black Jack’ is prized for its dark velvety foliage and compact yet dramatic form, making it a must-have for European Alocasia collectors.
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Alocasia Cyrtosperma Jhonstonii ‘Black Jack’
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Very happy with this alocasia, it arrived safely and has no damage, and is very healthy
Beautiful plants and excellent customer service
Beautiful plants and excellent customer service
Beautiful plants and excellent customer service
Beautiful plants and excellent customer service
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These came in perfect shape and are so easy. We put them on rocks and soak them in water once a week. Two weeks now and they still look so fresh. That never happens with our plants.