When is the right time to take cuttings of blackberry vines? Also, how do I effectively control white flies on my berry vines?
The fastest way to root blackberry bushes is by taking root cuttings. This should be done in January or February, when the plant is dormant. White flies can be treated with neem oil.
Here is an article or two that you may find helpful:
https://www.gardeningknowhow.com/edible/fruits/blackberries/propagating-blackberries-cuttings.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/whitefly-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
How tall do these things get? Do they turn into trees if you let them?
They reach anywhere from 3-6 feet tall and wide, sometimes a bit larger. These articles should help: https://www.gardeningknowhow.com/edible/fruits/blackberries/growing-blackberry-bushes.htm
https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm
I have started to harvest my blackberries, and they have white places where the blackberries are. What is wrong? Do I have to remove those white places?
If it is what I think it is, it is simply due to seeds that were not properly pollinated. Ths summer has been hard on pollination of plants because of the high heat and humidity in most of the country. This makes the pollen stick together and pollination is not as successful as it should be. If it is pollination, these white cells are also shriveled and stunted. They are safe to eat though.
I need to move my blackberry bushes to a larger growing area in my garden. When is the best time to move it and MOST IMPORTANTLY how do I dig up and move them without harming the roots and plant?
This article will help you to avoid transplant shock, which is what kills any plant that is not moved carefully:
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm
I'm getting a low amount of fruit this year (three year old plants), and the fruit I get is odd looking. About two thirds of the berry drupelets are black, but the rest are an unripe pale color. They're not too sweet either. Help!
My guess would be that you may simply be picking them too early. Most people tend to pick blackberries when they are a nice glossy, dark color when in fact you should wait for them to dull in color before harvesting.
I want to transplant my Blackberry plants to a better location. What is the best way and time of year to do this?
The best time for transplanting is in early spring. Select a transplant site that provides full sun, air circulation and is well draining. Here is an article that you may find helpful: https://www.gardeningknowhow.com/edible/fruits/blackberries/growing-blackberry-bushes.htm
Can blackberry plants be successfully transplanted in the late summer or fall? My wife loves blackberries and the romantic in me wants to get her plants for her birthday, but her birthday is August 22. I could give a raincheck until later in the fall but I do not think I can give a gift she won't receive until next spring. I live in the Nebraska City, NE area.
Blackberries are hard to kill, so transplanting anytime except during the mid-summerheat and drought should be OK. However, it is usually better to wait until the plants are dormant in fall. This article shouls also help: https://www.gardeningknowhow.com/edible/fruits/blackberries/growing-blackberry-bushes.htm