Filberts are certainly outstanding dual purpose plants, and I feel that they have not been used nearly as much as they should be. If we think of landscape from the broad point of view, we realize that screen or border plantings make up one of the most important parts of the set-up, especially in rural parts. Practically every farm home has some unattractive view near by that needs to be screened out, either partially or entirely. This view may be caused by a lot where farm animals are kept, an old, unattractive barn, or even a gullied field. Lots where animals are kept and the barn are necessary parts of the farm operations, and the gullied field may result from neglect, but regardless of the cause for the undesirable view it can and should be screened from view from the home.
In making a screen planting, two plans are possible—one, the shrub border, and the other the hedge row, and filberts are excellent to use in either planting. Where space is at a premium, the hedge offers the best form of screen. Filberts planted two and a half feet apart and pruned in such a way as to make them have a shrub appearance will make an ideal hedge and produce lots of nuts of good quality. This hedge can be counted on to be effective up to twelve feet in height.
In the shrub border filberts are allowed to produce many stems and to grow into small trees. This is done by pruning and by using groups of two or three plants in a place, planted some five or six feet apart. Different varieties may be used for different groups, thereby producing a variation of foliage. The filberts will take their places with the well known small trees like the dogwood and the redbud, when used in this way.
Still another use for filberts in landscape work is to use them for small trees as lawn specimen plants. They have a size, shape, and foliage that makes them attractive when used in this way.
+Cross Pollination Necessary+
Our experience has been that there is need for cross pollination to get maximum yields of fruit; therefore, we suggest that different varieties be used in a planting. Barcelona, DuChilly, and the Jones Hybrids seem to us well suited for this. Of course, there are others, but our experience with varieties is limited.
When it comes to the soil for filberts, we find that a fairly rich soil that has plenty of moisture is the best. Of course, the soil must drain well because the roots of filberts seem to be very susceptible to poorly drained soil conditions. If there is a lot of sand in the soil, give the filberts more moisture and food because they are rapid growers.
So far, we have not had many complaints about filberts suffering from winter injury. This may be due to the fact that so far Kentucky is not using great quantities of these plants, or it may be due to the fact that the varieties used have been reasonably hardy. The little winter injury seen so far has been in the terminal twig growth, and removal of these twigs in the spring has not meant altering the normal shape of the plant.
I do not know whether there is any significance to it but the filberts that have been fed by using well rotted manure applied in the fall and spaded into the top four inches of soil next spring have made the best growth and produced the most fruit.
So far the filberts that we have had experience with have been free from insects and diseases. One never knows how long that condition will last.