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Kenora Challenger

The dahlia serious exhibitors build their season around.

Kenora Challenger dahlia white semi-cactus bloom

Bluemoose / Wikimedia Commons / CC BY-SA 3.0

Semi-Cactus · 6–8"WhiteGordon Leroux (1991)United States

White petals taper to fine points, catching sun like paper lanterns in a cutting garden. The bloom holds its shape through heat and handling, which is why serious growers treat it as a bench standard. Judges know this one on sight. It was bred in United States by Gordon Leroux in 1991.

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Availability & pricing

No growers are currently listing Kenora Challenger on The Dahlia Hub.

Specifications

Physical

Form
Semi-Cactus
Bloom class
B6–8"
Bloom size
6–8"(15.2–20.3 cm)
Plant height
42–54"

Color

Color
White
Pattern
Solid
Tags
whiteivorybright whitecream heart

Growing context

Flowering season
Mid season
Cut flower
✓ Yes
Exhibition
✓ Yes
Stem length
24"

Provenance

1991
United States
Breeder
Gordon Leroux

Grower Profile

Difficulty

Intermediate

Ideal for

HobbyistsFloristsExhibitors

Growing Kenora Challenger

Stake early since the stems get top-heavy when blooms mature. Pinch once at four true leaves to push side breaks, then disbud the side buds if you want one clean show-quality head per stem. Watch for wind damage on tall plants near open sites.

Spacing
Space roughly 2–3 ft apart
Staking
Stake early — stems carry heavy blooms and lean in wind

Frequently asked questions

How tall does Kenora Challenger dahlia grow?

Kenora Challenger reaches 42–54" at maturity, so plan to stake plants early to keep heavy blooms upright.

When does Kenora Challenger dahlia bloom?

Kenora Challenger is a midseason bloomer, in flower from midsummer through first frost.

Is Kenora Challenger dahlia good for cut flowers?

Yes — Kenora Challenger is well suited for cutting, with approximately 5-day vase life. Stems typically reach about 24″.

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