1.7k gardener saves

Dahlia: the varieties gardeners actually grow

We track 126 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.

126 varietiesZones 5–10Mostly full sun

The 12 most-saved Dahlia varieties

Of 126 in the catalog — ordered by how many gardeners actually grow them.

Browse all 126 Dahlia varieties →

How to grow Dahlia

What the Dahlia varieties in our catalog actually agree on — drawn from the care records of the 40 most-grown of them, not from a generic template.

The Dahlia year

  • PlantApril and May100% of varieties

    Plant tubers 4-6 inches deep after the danger of frost has passed

  • Lift & StoreOctober and November100% of varieties

    Dig tubers after first hard frost, dry, and store in a cool, dark place

  • Pinch TipsMay and June93% of varieties

    Pinch central growing tip when 12 inches tall to encourage branching

  • DeadheadJune–September93% of varieties

    Remove spent flowers promptly to encourage new blooms

  • StakeMay and June88% of varieties

    Install sturdy stakes early for support before plants reach 1 ft

  • FertilizeJune–August75% of varieties

    Use a low-nitrogen fertilizer monthly once buds appear

Do

  • Water deeply once a week during dry spells 🌱
  • Apply a balanced fertilizer monthly during active growth
  • Water regularly to keep soil moist but not waterlogged 🌱
  • Stake tall varieties to prevent wind damage
  • Deadhead spent flowers to encourage continuous blooming

Avoid

  • Avoid overwatering to prevent tuber rot ❌
  • Refrain from fertilizing late in the season to prevent weak growth
  • Avoid overwatering which can cause tuber rot ❌
  • Refrain from fertilizing late in the season

What goes wrong with Dahlia

ProblemWhat you'll seeWhat to do
AphidsSticky residue and distorted leavesSpray with insecticidal soap or neem oil
Spider MitesFine webbing and speckled leavesIncrease humidity and spray with insecticidal soap
Spider mitesWebbing on foliageUse horticultural oil or insecticidal soap
SlugsIrregular holes on leavesApply iron phosphate bait or handpick
Powdery MildewWhite powdery coating on leavesApply sulfur fungicide or improve air circulation
Powdery mildewWhite powdery coating on leavesApply fungicide and improve air circulation
Root RotWilting and blackened rootsEnsure well-draining soil and avoid overwatering

Making more Dahlia

Tuber division

  1. Dig up tubers after foliage dies back, about late fall.
  2. Cut into sections, ensuring each has eyes.
  3. Allow cuts to callus for 24 hours.
  4. Plant in well-draining soil in early spring.

Cuttings

  1. Take 4-inch stem cuttings from healthy plants in late spring
  2. Remove lower leaves and dip in rooting hormone
  3. Plant in moist potting mix and cover with plastic
  4. Keep in warm, indirect light for 4-6 weeks

Dahlia questions

How many types of Dahlia are there?

The Sow catalog tracks 126 distinct Dahlia varieties. The most popular — ranked by 1.7k real gardener saves — are shown first above.

What zones does Dahlia grow in?

Across its varieties, Dahlia 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 Dahlia bloom?

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

Which Dahlia 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 Dahlia 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.

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