small blackberries

We have blackberries that came with the house along a block wall about 15 feet long. Trellis consists of wires screwed into the wall. The first picking (about 2 weeks ago was a little early). The fruit we are now getting is smaller, some to a point where the fruit is all seeds and very little flesh. What is causing this? We also planted some thornless blackberries 2 years ago at one end. That fruit is longer, more like a mulberry. Fruit on the newer plants also appear smaller than last year. What could be causing this? If I can feed to rectify it now, we have about 1/2 of the fruit that is ripening left on the canes. Otherwise, we will have to try your suggestion for next growing season. Thanks.

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1 Comment To "small blackberries"

#1 Comment By Downtoearthdigs On 06/14/2015 @ 2:27 am

Environmental effects, lack of pollination are possible reasons.

Here are some links with more information.

https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm ^[1]
https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberries-not-fruiting.htm ^[2]
https://www.gardeningknowhow.com/edible/fruits/blackberries/what-are-marionberries.htm ^[3]

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[1] https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm: https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm

[2] https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberries-not-fruiting.htm: https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberries-not-fruiting.htm

[3] https://www.gardeningknowhow.com/edible/fruits/blackberries/what-are-marionberries.htm: https://www.gardeningknowhow.com/edible/fruits/blackberries/what-are-marionberries.htm

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