tion will take place at great distances. It is best 
to plant them as close as practical and more com- 
plete pollination will take place if they are within 
several hundred feet or closer. 
In the planting of different species of Holly you. 
must have a male tree of each because Hollies do 
not generally cross-pollinate between species, e.g., 
you must have both a male and female American 
Holly and a male and female English Holly in 
order to produce berries on each species. 
If your Hollies do not produce berries one or 
more of the following might well be the cause of 
your trouble. 
1. Possibly your Holly is too young to bloom 
and bear fruit. 
2. Possibly both of your trees are of the same. 
Sex. 
3. Possibly your male and female tree are of 
different species. 
4. Possibly your male tree does not bloom at 
the same time as the female. 
5. Your Holly should be kept well fertilized to 
obtain good natural growth and it should be 
kept adequately watered in hot dry weather. 
If the tree appears diseased see your nursery- 
man. 
6. If none of the above causes are prevalent 
sometimes a good root pruning will be suffi- 
cient stimulant to force flowering and berries. 
7 
