The Raven ZZ plant, Zamioculcas zamiifolia ‘Raven’, stands out with striking, almost black foliage. This unique cultivar, introduced around 2019, captivates with dark leaves that emerge bright green before maturing to a deep purple-black. Its dramatic beauty and low-maintenance nature make it an excellent choice for both novice and experienced indoor plant owners.
Raven ZZ Plant Care
Light Needs
The Raven ZZ plant tolerates various light conditions, thriving in bright, indirect light but also adapting to lower light. Medium to bright indirect light helps maintain its vibrant, dark foliage. While it survives in dim settings, growth may be slower and leggy if light levels are consistently too low. Avoid direct, harsh sunlight, especially intense afternoon sun, as it can scorch the leaves.
Watering
Proper watering is important for Raven ZZ plants, as overwatering often leads to root rot. These plants have thick, water-storing rhizomes, allowing them to tolerate drought. Allow the soil to dry out completely between waterings to prevent excessive moisture. To check soil moisture, insert a finger or moisture meter 2 to 3 inches deep; if it feels dry, it’s time to water. Saturate the soil thoroughly until water drains from the bottom, then discard any standing water.
Soil Requirements
A well-draining soil mix is essential for Raven ZZ plants to prevent waterlogging and promote healthy root development. Standard houseplant soil can be used, but amending it with perlite, pumice, or coarse sand improves drainage. Potting mixes formulated for succulents or cacti are also good options, as they ensure proper aeration. The mix should remain loose and allow excess water to flow out freely.
Temperature and Humidity
The Raven ZZ plant thrives in warm indoor temperatures, ideally 65 to 85 degrees Fahrenheit (18 to 29 degrees Celsius). It is sensitive to cold drafts and temperatures below 60 degrees Fahrenheit (15 degrees Celsius), which can cause damage. Position the plant away from cold windows, doors, or air conditioning units. Average household humidity levels are sufficient, as it does not require high humidity.
Fertilization
Raven ZZ plants are not heavy feeders and require minimal fertilization. During the active growing season (spring and summer), apply a balanced liquid houseplant fertilizer. Dilute the fertilizer to half strength to prevent over-fertilization and salt buildup, which can harm roots. Fertilize once every three to four weeks or every two to three months, avoiding the dormant fall and winter months.
Propagating Raven ZZ Plants
Raven ZZ plants can be propagated through stem cuttings or by dividing the rhizomes. For stem cuttings, select a healthy stem and cut it near the soil line. Allow the cut end to callus for a few hours or a day before placing it in water or a moist potting medium. If using water, submerge only the cut end and change the water periodically to prevent rot. When using a potting medium, push the cut end about half an inch deep into a well-draining mix, keeping it consistently moist but not soggy.
Leaf cuttings are another effective method; remove individual leaflets and insert their cut ends into a moist substrate. This process is slow, often taking several months for roots and rhizomes to form. Division involves carefully separating the underground rhizomes when repotting a mature plant. Each separated section should have at least one stem and roots, then plant them into their own pots with appropriate soil.
Common Issues and Solutions
Raven ZZ plants, though hardy, can show signs of distress, often from improper care. Yellowing leaves frequently indicate overwatering or insufficient light. If the soil is consistently wet and leaves yellow, reduce watering frequency and allow the soil to dry thoroughly between sessions. Moving the plant to a brighter location with indirect light can also help if yellowing is due to low light.
Droopy stems or mushy, black roots indicate root rot, almost always caused by excessive watering. If suspected, remove the plant from its pot, trim any rotten or mushy root sections, and repot into fresh, well-draining soil in a pot with drainage holes. Underwatering can also cause droopy stems, though less common, and is remedied by thorough watering once the soil has completely dried.
Pest issues are less common but can occur, including mealybugs, spider mites, scale, aphids, and fungus gnats. Regular inspection helps catch infestations early. For minor infestations, wipe pests away with a damp cloth or a cotton swab dipped in rubbing alcohol. For persistent problems, apply insecticidal soap or neem oil, ensuring the plant is isolated to prevent spreading.