Blueberries

How long should it take in Zone 7 to see visible growth, i.e., leaves on newly planted blueberry roots (in bag similar to what roses come in)? I planted six three weeks ago following last frost, and only three of the plants had tiny leaves on them – nothing has changed.
HELP, please
Thanks B.

They should be leafed out as the temperatures get warmer. Blueberry roots are shallow and bare root plants take longer to establish than container grown plants. Plant them at the same soil level as previously grown. The root mass should be 1/2 to 1 inch below the surface of the soil.  Add 3-4 inches of organic mulch such as oak leaves, composted pine needles, or peat moss around the plant to keep them moist but not wet. Also try a transplant fertilizer (Strong start 4-16-8) to stimulate new root growth or some compost tea. Blueberries require an acid soil at a ph level of around 5.0 . Test your soil, if the soil ph is above 5.0 you will need to lower the ph by adding sulfur to the soil.