It takes time to black ZZ plant turn dark. Leaves start out bright green and turn black with time. It takes 6 weeks to for leaves to turn dark. Hues drop from bright green to dark green to purple black, and exposure to strong lights or artificial lighting only marginally influences the coloration.

Watering Zamioculcas Raven

Zamioculcas raven, originating from the African-born ZZ plant, is a flexible plant that can cope well with irregular watering.

• Watering in summer – Zamioculcas raven thrives when watered a small amount every two weeks.
• Watering in winter – this dormant phase means the raven ZZ plant only needs water once a month.

Allow the soil to dry out entirely before watering again. Zamioculcas raven has a tuber-like rhizome that stores water. Letting the soil dry out occasionally helps fend off root rot.