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Zizia aptera

Heart-leaf Alexanders · Heart-leaf Golden Alexanders · Heart-leaved Alexanders · Meadow Zizia

Family ApiaceaeGenus Zizia

A flat head of tiny bright yellow flowers above heart-shaped and toothed green leaves among grass
FlowerTom NortonCC BY 4.0
A line drawing of a heart-shaped basal leaf beside a stem carrying a flat umbel of small flowers and divided upper leaves, with a ribbed fruit and its cross-section.
IllustrationBritton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 2: 642. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc.Public domain

About the plant

What it is and where it grows — not part of any germination protocol.

The plant

Habit
Herbaceous Perennial, WildflowerExtension Gardener Plant Toolbox
Habit
perennialPlants of the World Online
Height
1-3 ft30-90 cmExtension Gardener Plant Toolbox
Spread
1-1.5 ft30-45 cmExtension Gardener Plant Toolbox
Flower
Gold/YellowExtension Gardener Plant Toolbox
Blooms
SpringExtension Gardener Plant Toolbox
Native range
Canada, lower 48 statesPLANTS Database
Hardiness zones
3-8Extension Gardener Plant Toolbox

Growing conditions

Sun
Full sun; Partial ShadeExtension Gardener Plant Toolbox
Soil
Clay, Loam (Silt), Shallow RockyExtension Gardener Plant Toolbox
Soil pH
Neutral (6.0-8.0)Extension Gardener Plant Toolbox
Moisture
Moist, Occasionally DryExtension Gardener Plant Toolbox

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; PLANTS Database — USDA NRCS.

Worth knowing

  • Heart-leaved golden alexanders is listed as endangered in Connecticut and threatened in Michigan, and it is believed to be gone from Rhode Island. Wikipedia: Zizia aptera

Protocol

DerivedN. C. Deno, 1996

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Zizia p. 87Public domain
Show the original text
Zizia (Apiaceae). Z. aptera germ. 44% in 2-6 w in either 70L or 70 GA-3 and none in 70D. The percent germination in 70L dropped to 10% for seeds DS 6 m.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Zizia p. 87. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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