Things You'll Need:
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Step 1
Choose an area of your garden with adequate drainage. Avoid planting in low-lying areas, because it raises the risk of the plant succumbing to frost and flooding. Hill tops are prime locations for growing Brazos blackberries.
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Step 2
Conduct a soil pH test on your planting area. Dig a hole in the area and collect soil samples to send off to a testing center. You can purchase soil-testing kits at a garden supply center. Brazos blackberries prefer growing in a lightly acidic soil between 5.5 and 6.5. Soil over this range will cause these blackberries to show iron chlorosis.
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Step 3
Remove any weeds, grass or other plants within and around the area. Other vegetation will compete with the newly planted plant for water and nutrients.
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Step 4
Dig a shallow hole that is large enough for the roots. Make the hole the same depth as the container from the nursery. Carefully spread the roots into the hole without bending them. Blackberry plants should be between 2 to 4 feet apart from each other, and 3 to 5 feet apart from a row.
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Step 5
Pack the soil around the plant. Be sure that it is tightly packed to eliminate air pockets. Prune any damaged or weak canes off the plant. You can cut back at least 6 inches. Water the plant.
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Step 6
Attach a trellis to support the plant. If you are growing only a couple Brazos blackberry plants, you can bury two stakes behind and on either side of the plant. Use rope to tie the blackberry canes to two wires that are attached to the stakes.
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Step 7
Place mulch around the plant to lock in moisture. Water the plant each week during dry seasons or when the soil is too dry. Brazos blackberries need 1 inch of water each week. Fertilize your plant each spring.
