Is this the right sign to prune blackberry bushes. Today or another day?
This is the appropriate time to do so. Here is an article that will help:
https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm
You say trim 2 year old canes. Today, how do I know which canes produced berries? They all seem to look the same! Jim
Usually, older canes will be "woody" whereas newer canes will be more "flimsy" and have more bend to them.
This collection of articles will give you more information on blackberries:
I have a fairly young Triple Crown blackberry plant in a container. New leaves are getting brown/purple edges. they do not die, but the plant doesn't look happy. It is in a well drained potting mix, in a 20 Liter (about 5 Gallon) container. No fertilizer yet. Over watering? under watering? No evidence of pests. Anyone can help? Thx.
It appears as damage from overly wet soils. Fortunately, you can test for deficiencies or overload in nutrients in the soil to rule out nutrient imbalances or pH issues. These articles will help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/test-soil-for-pests-and-diseases.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/making-sure-soil-drains-well.htm
If you go through all test with no issues, then you may chalk this up to disease. I think that a soil test will reveal the issue, though.
This collection of articles will help you with the care of blackberries:
My husband is wanting to start planting and selling blackberry plants. He purchased several of the black balls that attached to a branch and start their own roots on the branch. Seems simple and much less work involved as opposed to tip layering. And, if possible, it would make the new growth much quicker to grow and produce berries. But...I can not locate any articles which indicate blackberries will root with these black balls, only woody trees. Before he gets out there and kills all our large blackberry bushes, I would like to know if it is possible or should we use the old method of tip layering? Would it be possible, if the balls can not attach to the branch, can they be used at the ends and instead of putting the tip in a hold, use the black balls?
Here is information on propagating blackberry bushes.
https://www.gardeningknowhow.com/edible/fruits/blackberries/propagating-blackberries-cuttings.htm
Here it’s the 1st of June in east Texas an my second year vines (Arapaho,) have grown their new shoots upwards to around 7’ or more. Should I let them grow or prune back to my 4’ fence height. I’m pretty clear on winter pruning and don’t want to mess my bushes up. This is just first season since I planted them last spring of 2020 and they are producing like crazy. Thanks Dennis
This article should help:
https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm
I am from the northwest so I am familiar with black berries but I have never seen this before. The individual segments on the berries are a tan color and mushy but the pips are extra hard if you smash the berry open. These are grown in full sun rows in Northern California where it is hot and dry. They have a drip system that's only run a couple times a week for about 20min. Its producing a huge amount of berries but they have this weird affliction I haven't been able to identify. I help with this garden with another person who is normally the one who takes care of them. So I dont know what kind of fertilizer he uses.
This resembles Anthracnose, but I would take samples up to your local extension service:
Do you remove the weeds from bed like you would from your garden?
It does help to reduce competition, but they can handle a little if it comes down to it.
This collection of articles will help you to care for the plant: