at start if summer we cut 30 shoots from our rose bush – where each cut was placed in rooting powder at first appeared to start sprouting – but was taken out and placed into the garden all 30 after first signs of growing then suddenly started dying off all 30 the cuttings was taken off our rose bush after the roses stopped growing. Please what could caused this bad reaction for all 30 cuttings to die off respectfully.
Certified GKH Gardening Expert
The roots may not have been established enough to go outside. Also, did you harden them off first? Start out in the shade then gradually increase the amount of sunlight each day.
Here's an article about growing the cuttings: