Thornless Blackberry 'Doyle's Thornless'


Family: Rosaceae (ro-ZAY-see-ee) (Info)
Genus: Rubus (ROO-bus) (Info)
Cultivar: Doyle's Thornless


Edible Fruits and Nuts

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


36-48 in. (90-120 cm)


Unknown - Tell us


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Sun to Partial Shade

Light Shade


Unknown - Tell us

Bloom Color:

Unknown - Tell us

Bloom Time:

Unknown - Tell us


Unknown - Tell us

Other details:

Unknown - Tell us

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Unknown - Tell us

Propagation Methods:

By simple layering

Seed Collecting:

Unknown - Tell us


This plant has been said to grow in the following regions:

Corte Madera, California

North Fork, California

Placerville, California

Sandpoint, Idaho

Greenup, Illinois

Lanoka Harbor, New Jersey

Salt Lake City, Utah

show all

Gardeners' Notes:


On Jan 14, 2013, br2003 from Kelowna BC,
Canada wrote:

Our experience with Doyle's Thornless Blackberries goes back to May of 2010. We live in the Okanagan valley in the city of Kelowna, British Columbia, Canada. We carefully examed the possibility of growing these blackberries in this region as we do have cool winters but there seemed to be no reason to not plant these berries as they are reported to be very hearty. This valley is full of orchards where cherries, peaches, apples, apricotes, plums, etc are grown readily and exported to many places in the world.
We ordered about 150 blackberry bushes. The order was filled out with no problem from Florida and it was reported that 5 boxes were coming. Fine, we awaited their arrival and only 4 boxes arrived and it was obvious that Air Canada had had some problems along the way and so ... read more


On Sep 26, 2009, MarieLN from Corte Madera, CA wrote:

Wonderful plant! Prolific bearer of yummy berries on a 100% thornless, healthy shrub. Carefree. A child's delight. Fabulous service from Doyle's.


On Jan 6, 2006, Gabrielle from (Zone 5a) wrote:

2005 was the first year for this to produce berries. They were big and very juicy, but not much flavor, and they weren't sweet. Chipmunks and ants didn't even bother them, even when they were so ripe they fell! I contacted the company, and they said the pH could be off; I can't remember the range they said it should be. I am trying it in some other locations in my yard to see if they do any better. I am also going to give them less water in case that was the problem.

Even if the flavor of the fresh berries doesn't improve, I will keep them. I eventually tried cooking them with sugar, and they were very good to eat that way or in pies.

If there is enough moisture, everywhere it touches the ground, it roots.

If they do better in the future, ... read more