632 gardener saves

Zinnia: the varieties gardeners actually grow

We track 17 varieties; these are the ones gardeners actually save and plant, ranked by real saves rather than catalog marketing. Each links to full care, bloom, and live price data.

17 varietiesZones 5–10Mostly full sun

The 12 most-saved Zinnia varieties

Of 17 in the catalog — ordered by how many gardeners actually grow them.

Browse all 17 Zinnia varieties →

How to grow Zinnia

What the Zinnia varieties in our catalog actually agree on — drawn from the care records of the 17 most-grown of them, not from a generic template.

The Zinnia year

  • PlantApril and May100% of varieties

    Sow seeds or transplant seedlings after the danger of frost has passed

  • DeadheadJune–September100% of varieties

    Remove spent flowers regularly to encourage new buds

  • FertilizeMay–August76% of varieties

    Apply balanced liquid fertilizer every 4-6 weeks for continuous bloom

  • HarvestJune–September71% of varieties

    Cut stems when flowers are fully open for best vase life

  • Check for PestsJune–August65% of varieties

    Monitor for powdery mildew, especially during humid periods

  • Pinch TipsMay and June41% of varieties

    Pinch central stem when young (8-12 inches) to promote branching

Do

  • Apply a balanced fertilizer monthly
  • Water deeply once a week 🌱
  • Water consistently to keep soil evenly moist 🌱
  • Deadhead regularly for prolonged flowering
  • Deadhead to prolong flowering 🌸

Avoid

  • Avoid overwatering to prevent root rot ❌
  • Avoid overwatering which can cause root rot ❌
  • Don’t forget to mulch to retain soil moisture
  • Overwater to prevent root rot ❌

What goes wrong with Zinnia

ProblemWhat you'll seeWhat to do
AphidsSticky residue and curled leavesApply insecticidal soap or neem oil
Spider MitesFine webbing and stippled leavesIncrease humidity and use miticide if necessary
Spider mitesFine webbing and speckled leavesUse insecticidal soap or horticultural oil
Japanese beetlesChewed leaves and flowersHandpick or apply appropriate organic insecticide
Powdery MildewWhite powder on leavesImprove air circulation and apply fungicide
Powdery mildewWhite powder on leavesImprove air circulation and apply fungicide if needed
Root RotWilting and brown rootsEnsure well-draining soil and reduce watering

Making more Zinnia

Cuttings

  1. Take 4-inch stem cuttings in late summer
  2. Remove lower leaves and dip in rooting hormone
  3. Plant in moist potting mix and keep humid for 6 weeks

Seed

  1. Tuck seeds ¼ inch deep in moist soil (2 weeks)
  2. Keep soil warm and moist for germination
  3. Thin seedlings to 12 inches apart

Zinnia questions

How many types of Zinnia are there?

The Sow catalog tracks 17 distinct Zinnia varieties. The most popular — ranked by 632 real gardener saves — are shown first above.

What zones does Zinnia grow in?

Across its varieties, Zinnia covers USDA Zones 5–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.

When does Zinnia bloom?

Most Zinnia varieties bloom in summer to frost, mid-summer, summer to frost. Staggering early, mid, and late varieties extends the genus's season in one bed.

Which Zinnia should I choose?

Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.

Keep exploring

Design with Zinnia in your own yard

Snap a photo of your space and see these varieties planted in it — sized correctly, matched to your zone, with care reminders included.

Download Sow on the App StoreGet Sow on Google Play