I am new at this. I have blackberry sprouts that I planted about 3 years ago. I did not know to keep track of which sprouts grew berries this year and the deer got most of the berries anyway. Some of these sprouts are 8 foot or longer at the moment and growing into my other garden space, so I would like to trim them back; however, some of these sprouts I know did not yield berries this year. Can I cut them back to ground anyway without harming the over all sprouts? Any advice regarding trimming and caring for the black berry sprouts would be most helpful.
Here is an article that you may find helpful: https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm
What kind of fertilizer should I use for blackberries?
Use an organic fertilizer, such as compost, which can be applied during planting. You can also mix some with water and apply during watering about once a month.
Just wondering if I need to cover my blackberry plants with straw or hay? Or do I need to protect them in any way?
If they were planted this year, then it would not hurt to mulch them with straw or leaves to give them a bit of extra protection. If they are established (more than 1 year old), they do not need to be mulched.
When should you fertilize new blackberry plants?
I would fertilize them in the spring. Fertilizing in the fall may cause the plants to go into a growth spurt rather than dormancy, which would make them more susceptible to winter damage.
When picking blackberries, They are blackish and very sweet. The next day, they are reddish and not sweet. Help on why, please.
Some varieties of blackberries turn reddish in color inbetween the green stage and the ripe stage. I suspect that your red berries are still just a little under-ripe. Give them some more time to ripen before picking.
Can I take a cutting from an existing blackberry bush to start another? How do I go about this? Thanks for your help.
Yes you can. This article will help: https://www.gardeningknowhow.com/edible/fruits/blackberries/propagating-blackberries-cuttings.htm
I planted a blackberry bush last year and it went crazy big with lots of fruit. I would like to replant to a raised bed. Can I do this now after it's been in the ground? It's too big for the spot it's in.
Generally, the best time for transplanting blackberries is fall, but spring is the next best time for transplanting them. 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
Also, it may help to do it in the evening to reduce stress/transplant shock, and be sure to include as much of the roots as possible. If you have not already done so, you may want to prune your blackberry bush as well. Here is an article that you may find helpful: https://www.gardeningknowhow.com/edible/fruits/blackberries/blackberry-pruning.htm
To add to NIKKI's GREAT advice when you transplant add some hydro sorb type water crystals to the hole. Your plants will love it and it will really help the plsnt. Another name for these crystals are TERA SORB. what these crystals do are absorb 400 times there weight in water. when the ground is dry the roots have a supply of water till you get to the watering.