least vigorous of all the rootstocks - grown as a bush tree, they can be
spaced as little as 1.2m (4ft) apart.
serious drawback to garden cultivation of M27 rootstock is that the conditions must be
perfect and the crop of apples will be relatively small. No competition from
weeds or grass, very fertile soil and permanent staking are the downside.
do not recommend this rootstock for open garden cultivation. However, they
make excellent large tub plants or will grow reasonably well on patios.