Juglans Family (Walnuts)
The Black Walnut Neighbourhood
As some of you already know, many plants simply do not grow well when planted close to a walnut tree. The roots of both the black and English walnut as well as the butternut give off a toxic substance known as juglone which eliminates their competition. It will kill most evergreens, as well as some fruit trees and a number of vegetables. Most grasses seem not to mind, and some plants actually seem to thrive.
The following is a short list of some of the best neighbors for a walnut tree:
Black raspberries, Grapes, Rugosa roses, High bush cranberries, Black locust, Goumi, Persimmons, Paw paws, Mulberries, Currants, Elderberries, Sweet corn, Beans & Onions.
Some of the poorest choices include: Apples, Pears, Blackberries, Tomatoes & Alfalfa.
Nut : ENGLISH WALNUT 60-100cm (24-36") On Own Root
(Juglans regia carpathian)
A close relative of Black Walnut, the English Walnut is known by a number of other names including Carpathian and Persian. They do, in fact, originate in ancient Persia, but most seedlings were brought to North America by early settlers from Germany and Eastern Europe. When fully dormant, English Walnuts are just as cold hardy as Black Walnuts and have survived -40°, however they are more susceptible to fluctuating temperatures and late spring frosts. Many people do prefer the high quality English nuts with their thin shells and milder but full bodied flavour. Mature height is 15-18m (50-60').
As with Butternuts and Black Walnuts we recommend planting two seedlings for pollination, however, they are partially self-fertile. Some cross pollination may also occur amongst the various juglans species.
PLANT 2 FOR POLLINATION | ZONE 5 | HARVEST: SEPT.-OCT.
G935 Small Semi-Dwarf
G969 Small Semi-Dwarf
Some trees and many berry plants are SELF-FERTILE ̶means the insect pollinators or even the wind can pollinate the blossoms without the need of a second tree.
NEEDS A POLLENIZER ̶ means another tree of the same type or kind but a different variety must be blooming nearby at the same time.
EXAMPLE A Liberty apple and a Wealthy apple can cross-pollinate. Two trees of the same variety ie: ̶ 2 Wealthy apples, cannot cross pollinate because they are genetically identical.
Other trees are marked as SEMI-FERTILE. These will set fruit without a second tree. However they will often bear more, and sometimes larger fruit if another variety of the same kind of tree is nearby.
You can select 2 different trees of the same kind marked as NEEDS A POLLENIZER or plant one of those along with one SELF-FERTILE or one SEMI-FERTILE. Also consider ripening times ̶ a Goldrush apple might not start blooming before a Pristine is finished.
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