Bareroot plants…dead?

Hello all,

Planted a bareroot mixed hedge on the 19th March and only the Guelder rose is showing new green growth; the dog rose and wild cherry have small buds that aren’t doing much, but I’m concerned about the hawthorn/blackthorn which are showing no signs of budding at all.

Is this normal for barerooted plants whilst they get established? There’s about 10 or so hawthorn/blackthorn so not an isolated issue. No greenery on any of it. Locally all the hawthorns are really starting to put out new growth, hence my concern.

Thank you!