The ZZ plant (Zamioculcas zamiifolia) is native to eastern Africa, particularly regions like Kenya and Tanzania. In its natural environment, it thrives in warm, arid conditions with well-draining soil and dappled sunlight. The plant has adapted to survive periods of drought by storing water in its thick rhizomes and fleshy leaves. This makes it highly resilient indoors but raises questions about its adaptability to outdoor summer conditions.
ZZ plants prefer temperatures between 65°F to 85°F (18°C to 29°C), which aligns with typical summer conditions in many regions. However, they are sensitive to temperatures below 45°F (7°C) and can suffer damage if exposed to frost or prolonged cold. In summer, if nighttime temperatures remain above 50°F (10°C), the plant can generally tolerate being outdoors. However, sudden temperature drops or heatwaves above 90°F (32°C) may stress the plant.
Indoors, ZZ plants thrive in low to bright indirect light. When placed outside, they should be shielded from direct sunlight, especially during peak summer hours. Intense midday sun can scorch the leaves, causing yellowing or brown patches. An ideal outdoor spot would be under a shaded patio, beneath a tree, or in an area with filtered light. Gradually acclimating the plant to outdoor light over a week can prevent shock.
While ZZ plants are drought-tolerant, outdoor conditions can increase their water needs due to higher temperatures and wind exposure. Water the plant only when the top 1-2 inches of soil are dry, and ensure the pot has drainage holes to prevent root rot. Humidity is less of a concern, as ZZ plants adapt well to dry air, but excessive rain or humidity in some climates may require shelter to avoid overwatering.
Well-draining soil is critical for ZZ plants outdoors. A mix of cactus or succulent soil with perlite works well to prevent waterlogging. If planting in the ground, ensure the soil is sandy or loamy and amend it with organic matter for better drainage. Potted ZZ plants should be placed in containers with drainage holes and elevated slightly to avoid standing water.
Moving a ZZ plant outdoors increases its exposure to pests like aphids, spider mites, and mealybugs. Regularly inspect the leaves and stems for signs of infestation. Wiping the leaves with a damp cloth or using insecticidal soap can help manage pests. Avoid placing the plant near other infested plants to reduce the risk of cross-contamination.
As summer ends, gradually reintroduce the ZZ plant to indoor conditions to avoid shock. Check for pests before bringing it inside, and trim any damaged or yellowing leaves. Reduce watering frequency as the plant adjusts to lower light levels indoors. This transition is crucial to maintain the plant’s health during the colder months.
