fencing plan for the Hazelnut trees: Galvanized steel Lath Mesh for rodents; 7' poultry fence for deer; 6' bamboo poles galore

 Phil Rutter, et. al. at Badgersett:

 We have not found “tree shelters” to be cost effective; they must
be staked, weeded, tended, and lifted in fall to allow the plants to
go dormant in time for winter. They can kill bluebirds, and in wet
years, they can make the environment inside the tube too wet.
On the other hand, we have had reports of several plantings
where they definitely helped the seedlings get established. If you
are interested in them, try a few on your site first, before investing
in large numbers of tubes. 12” or 18” tubes are fine for young
hazels, don’t have to be staked, and can be removed after a year.