Navaho Summerlong blackberry variety
Fully thornless erect-growing cultivar with long period of harvesting and high yield
Plants are thornless
Bushes have erect canes
Fruit weight is 5 g
Berries have a oblong shape
Fruiting habit - floricane fruiting (summer-bearing)
Flowering on floricanes starts in the fourth week of May
Ripening date (regular) - third week of July
Productivity is 4 kg per plant
Cold hardiness is moderate
Current status - modern or widely used
Country of origin - Switzerland
Asterina Direttissima Montblanc Jumbo Lowberry Little Black Prince Navaho Big And Early Navaho Summerlong Navaho The Big Easy Polarberry
The flowers are very nice and attractive, slightly pink at first but opening up to pure white.
Fruit production begins mid to late July and lasts well into September (4-6 weeks). Summerlong bears 3-5 kg of fruits (and up to 10 kg on good soil with right fertilizer). Berries are average sized, slightly elongated, very sweet when fully ripe. Median weight is 5-6 g. The fruits are dark and shiny, and held away from the foliage.
One disadvantage of Navaho Summerlong is that it will throw up suckers over 1 m from the crown so you need to be ready to cut those down as soon as they appear. Without this regular pruning the plant can spread a large distance over a couple of years. Also Navaho Summerlong is poorly suited to heavy soils or containers (pots) as it is rather susceptible to root rot, causing loss of vigor and cane dieback like its parent plant Loch Ness from which it's a hybrid cross as the other Navahos.
Resistance to low winter temperatures is about minus 15 C.