How to Grow Cooperi
iNaturalist
Cooperi
Haworthia cooperi
succulentHaworthia cooperi is a small, slow-growing succulent native to South Africa, known for its transparent or translucent leaf tips that allow light to penetrate to the plant's interior. It forms tight rosettes of fleshy, pointed leaves and produces delicate white flowers on tall spikes. This compact plant is popular as a houseplant due to its unique appearance and minimal care requirements.
When should you plant Cooperi in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Cooperi timeline · Pittsburgh, PA (Zone 6b)
-
Plant Cooperi
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Cooperi
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Cooperi dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Best grown indoors in most climates; can be outdoors year-round in zones 10b-11
Sign up free to see if Cooperi grows in your zone — and get a personalized planting timeline.
Get my Cooperi timeline →Growth Stages
Seedling
4-8 weeksTiny rosettes emerge with translucent leaf tips becoming visible within weeks
Keep soil slightly moist but not wet; provide bright indirect light; maintain high humidity
Juvenile
6-12 monthsSmall rosettes develop, 1-2 inches in diameter; leaf patterns and transparency become more pronounced
Begin reducing water frequency; ensure excellent drainage; minimal fertilizer needed
Mature Vegetative
1-2 yearsRosettes reach 3-4 inches in diameter with fully developed transparent leaf tips; plant appears ready to flower
Water only when soil is completely dry; provide bright indirect light; allow winter dormancy period
Flowering
3-6 weeksTall flowering spikes emerge from the center of mature rosettes, bearing small white star-shaped flowers
Continue normal watering schedule; provide bright light to encourage blooming; flowers last several weeks
Pup Production
Ongoing after maturityAfter flowering or naturally, baby rosettes (pups) develop around the base of the parent plant
Separate pups once they have developed roots; allow to dry before potting in fresh succulent soil
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray with neem oil or insecticidal soap; remove with rubbing alcohol on cotton swab; isolate infected plants
-
Improve drainage; repot in fresh, dry soil; reduce watering frequency; remove affected roots if visible
-
Remove manually with tweezers; treat with neem oil; improve air circulation
-
Increase humidity slightly; spray with water; use miticide if severe; improve air circulation
Uses
Indoor decorative plant
HouseholdHaworthia cooperi makes an excellent low-maintenance houseplant for desks, shelves, and windowsills. Its unique transparent leaf tips and compact size add visual interest to any indoor space. [source]
Succulent arrangement component
CraftCooperi is ideal for creating living succulent arrangements, terrariums, and miniature gardens due to its slow growth and small mature size. [source]
Pollinator-friendly houseplant
WildlifeThe white flower spikes attract bees and other pollinators when grown indoors near windows, contributing to indoor plant biodiversity. [source]
Harvest Tips
Harvest pups (baby rosettes) once they develop roots, typically 2-3 months after emergence. Gently separate from parent plant using a clean knife. Allow cut surfaces to dry for 1-2 days before planting in fresh succulent soil. Seeds can be collected from flower spikes after flowers fade.
Fun Facts
- 🌱 Haworthia cooperi's translucent leaf tips are an adaptation called 'windows' that allow sunlight to reach the interior of the plant, reducing water loss in its native arid habitat.
- 🌱 Despite being a succulent, Haworthia cooperi prefers slightly more moisture than many other succulents and can rot if kept completely dry for extended periods.
- 🌱 Named after Henry Vincent Cooper, a 19th-century South African botanist, Cooperi remains one of the most sought-after Haworthia species among collectors worldwide.
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Cooperi planting timeline
Tell us your zip code and we'll calculate exactly when to start Cooperi seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Cooperi timeline →