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Evergreen Ash
IntermediateCojoba arborea var. angustifolia
Delicate pinnate leaves with charming nyctinastic movement (closing at night). Bright green foliage creates natural atmosphere.
About
Evergreen ash (Cojoba arborea, formerly Pithecellobium confertum) is an evergreen tree in the family Fabaceae, native to the tropical rainforests of Central and South America. Its finely divided pinnate leaves give it a light, feathery appearance, and the plant is notable for its nyctinastic leaf movements — leaves fold closed each evening and reopen in the morning, adding a captivating sense of life to indoor spaces. It prefers bright indirect light and is highly sensitive to drought; the soil should be watered as soon as the surface dries, as leaf tip browning and defoliation follow quickly from water stress. High humidity is beneficial, and regular misting helps maintain healthy foliage. Fast-growing indoors, reaching 0.5–2 m. Its combination of delicate texture and daily leaf movement makes it a unique and beloved houseplant.
Basic Info
Origin
Central and South America
Lifespan
10+ years
Size
50cm-2m (potted)
Temperature
10〜30℃
Humidity
50〜70%
Growing Tips
Placement
Bright indirect light
Watering
Sensitive to drought. Water as soon as surface dries
Humidity
Prefers some humidity. Leaf misting recommended
Growth
Fast growing — regular pruning needed
Notes
Drops leaves immediately when underwatered
Evergreen Ash FAQ
QWhat is the growing difficulty level for Evergreen Ash?
Intermediate. A variety suitable for intermediate growers. Requires some cultivation experience and knowledge of environment management. Pay careful attention to temperature and humidity control.
QWhat is the ideal temperature for Evergreen Ash?
The ideal temperature for Evergreen Ash is 10〜30℃. Recommended humidity is 50〜70%. Avoid sudden temperature changes and maintain a stable environment.
QWhat is the lifespan of Evergreen Ash?
The average lifespan of Evergreen Ash is 10+ years. With proper cultivation environment and nutrient management, you can keep it healthy for a long time.
QHow large does Evergreen Ash get?
The mature size of Evergreen Ash is 50cm-2m (potted). This may vary slightly depending on cultivation environment and individual differences.
QWhat is the typical price for Evergreen Ash?
The price of Evergreen Ash varies significantly by variety, characteristics, size, and lineage. Please check ボタちょく's price guide for the latest market information.
Last updated: June 24, 2026
References & Sources
Edited & verified by: BoTachoku Editorial Team
The classifications, regulations, and growing data on this page are created and verified based on the primary information database below.
Taxonomy & Authority
Regulations & Conservation Status
観葉植物。CITES附属書(植物)・特定外来生物・特定動物いずれも非該当を有限文書照合で確認(CITES flora section に当該属の掲載なし。Dracaena spp.掲載は同名のトカゲ属でありシダ植物Dracaenaは非該当)。
Sources: CITES Appendices I/II/III (flora section, grepped via dbca mirror) / CITES Appendices (official) / 環境省 特定外来生物等一覧
Regulations may change. Always verify the latest information with the relevant authorities.
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