Obsidian blackberry variety

Rating [ 5 ]

Thorny trailing blackberry variety with early ripening, firm, uniform shaped berries and very good yields of excellent quality fresh fruits

Originated from a cross of

Originated from a cross of ORUS 828-43 x ORUS 1122-1

Plants are

Plants are thorny

Bushes have

Bushes have trailing canes

Fruit weight is

Fruit weight is 6 g

Shape

Berries have a conical shape

Fruiting habit

Fruiting habit - floricane fruiting (summer-bearing)

Flowering on floricanes starts in the

Flowering on floricanes starts in the second week of May

Ripening date (regular) -

Ripening date (regular) - fourth week of June

Productivity is

Productivity is 7 kg per plant

Soluble solids

Soluble solids - 12.4%

Acidity

Acidity - 1.7%

Cold hardiness is

Cold hardiness is moderate

Country of origin

Country of origin - United States

Current status

Current status - obsolete or rarely used


Obsidian (ORUS 1369-3) is a thorny trailing blackberry variety from Oregon, Unites States. It is very early ripening plant with medium-sized, firm, uniform shaped berries and very good yields of excellent quality fresh fruits. Plants are large and vigorous. Obsidian is thorny, similar to Marion, but less thorny than Kotata and Metolius. Obsidian cultivar has moderate resistance to different diseases.
The fruit ripening season starts at the end of June, peaks in early July and continues for 14-15 days. Average yield is about 19000 kg/ha, fruit weight is about 6 g. Berries are conical in shape with a drupelet arrangement that produces a very uniformly shaped fruits. Berries are very glossy with excellent black color. The fruit of Obsidian blackberry separate easily from the plant. Flavor and taste is better than Black Diamond and Chester Thornless, but worse, than Marion. Firmness is superior, which is very good for shipping.
Winter hardiness is moderate, about minus 13 C.
Table 1. Comparison table of Obsidian, Marion, Kotata, Waldo and Douglass blackberry at the North Willamette Research and Extension Centre, Oregon State University (planted in 1996)
Cultivar Fruit weight, g Yield, t/ha
1998-2000 1998 1999 2000
Obsidian 5.5 55.0 18.2 18.6
Marion 5.1 20.0 9.2 18.2
Kotata 4.6 20.6 6.9 19.5
Waldo 5.4 13.8 13.0 17.8
Douglass 5.2 7.0 2.4 9.5
Table 2. Comparison table of Obsidian and some other blackberry cultivars at the North Willamette Research and Extension Centre, Oregon State University (planted in 1999)
Cultivar Fruit weight, g Yield, t/ha
2001-2003 2001 2002 2003
Obsidian 6.8 40.8 20.1 24.0
Silvan 6.2 31.7 16.8 21.4
Black Diamond 5.8 29.2 15.5 19.0
Marion 5.1 26.3 13.0 18.3
Metolius 5.6 31.3 12.5 12.5
Waldo 5.5 25.8 11.0 17.2
Siskiyou 6.9 20.9 9.8 9.3

Useful Growing Guides

Useful Growing Guides:

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Reviews of the variety Obsidian

Review from [FRUITNUT]

I grew Marionberry and several others in pots. That’s going to do way better than outdoors in your area. The yield is really pretty darn good for small pots.

These are all in pots about 3 gallon. That works with frequent watering.

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