Photo: no rights reservedCC0 1.0via iNaturalist
Heartleaf Alexanders Plant Care
Zizia aptera (A.Gray) Fernald
Updated · Sources · How we source care data
Zizia aptera is known for its delicate, finely dissected leaves that resemble fern fronds. Originating from North America, this plant is highly sought after by collectors for its unique foliage and attractive clusters of small yellow flowers that bloom in the spring.
Every 7–10 days
Full sun to part shade
50–80°F
40–70%
At a glance
How do you care for Heartleaf Alexanders?
Water Heartleaf Alexanders every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to part shade. It prefers temperatures of 50–80°F (10–27°C) and 40–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Heartleaf Alexanders Native To?
What Is the Heartleaf Alexanders?
Heartleaf Alexanders (Zizia aptera) belongs to the Apiaceae family within the Zizia genus. Heartleaf Alexanders is native to North America. Heartleaf Alexanders is also known as Heart-leaf Alexanders, Meadow Parsnip.
Heartleaf Alexanders displays a clumping perennial herb growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Heartleaf Alexanders produces small clusters of yellow flowers in umbels.
Leaf size: approximately 3 inches.
How Often Should You Water a Heartleaf Alexanders?
Zizia aptera requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Heartleaf Alexanders Need?
Heartleaf Alexanders thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Temperature and Humidity Does the Heartleaf Alexanders Prefer?
Zizia aptera grows best at temperatures of 50–80°F. Heartleaf Alexanders prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Heartleaf Alexanders?
Moist, well-draining soil with high organic matter content. Good drainage is essential for Heartleaf Alexanders to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Heartleaf Alexanders?
Feed Heartleaf Alexanders every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Heartleaf Alexanders?
Divide clumps every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Heartleaf Alexanders?
Heartleaf Alexanders can be propagated through seeds, division. Similar propagation techniques also apply to golden alexanders plant care, which shares the same genus.
Is the Heartleaf Alexanders Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Heartleaf Alexanders, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Heartleaf Alexanders?
Heartleaf Alexanders is susceptible to aphids, caterpillars, spider mites. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Heartleaf Alexanders Need?
Heartleaf Alexanders grows outdoors in USDA Zone 3a – 8b. It survives winters down to planting zone 3a. Heartleaf Alexanders is native to North America.
Hardiness Zone
Zone 3a – 8b
Keep exploring plants
Heartleaf Alexanders is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Zizia genus — compare its care with other Zizia species on PlantoScan.
Zizia is part of the Apiaceae plant family — browse all Apiaceae genera and species.
Heartleaf Alexanders thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Zizia aptera (A.Gray) Fernald, family Apiaceae (first published in Rhodora 41: 441 (1939)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Heartleaf Alexanders, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Public domain, CC0 1.0, iNaturalist — original.
- Hardiness zone: USDA Zone 3a – 8b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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