Pistachio nuts are getting a lot of press these days. Not only are they the lowest calorie of the nuts, but they are rich in phytosterols, antioxidants, unsaturated fat (the good stuff), carotenoids, vitamins and minerals, fiber and are just plain delicious. If that isn’t enough information to entice one to grow pistachio nut trees, I don’t know what will.
There are 11 species of pistachio nut trees with only Pistacia vera being grown commercially. It’s uncertain where pistachio nut trees originated, but possibly in Central Asia. Growing pistachio trees commercially for nut export occurs primarily in Turkey, Iran, Afghanistan, Italy and Syria where the arid climate is optimal for growth.
Worauf sollte man beim Kauf von Substraten achten?
Nicht der Preis allein ist entscheidend. Sehr günstige Angebote bestehen oft nur aus abgeräumten Mutterbodenschichten ohne Nährstoffzusätze, häufig mit Unkräutern besetzt.
How to Grow a Pistachio Tree
Climate is crucial when growing pistachio trees; ideal temperatures for pistachios are above 100 F (38 C) during the day. Pistachios also need winter months cold enough to complete their dormant period — 45 F (7 C) or below. In addition, pistachio nut trees don’t do well at high elevations due to the cool temps, or anywhere where it dips below 15 F (-9 C).
So it’s a little picky about its temperature requirements. Conversely, pistachio trees do well in all soil types but really thrive in deep sandy loam. Well draining soil is a must and infrequent deep irrigation if possible. Additionally, they are quite drought tolerant but don’t do well in areas of high humidity.
Borken- und Splintkäfer auf dem Vormarsch
Sterben Gehölze astweise ab oder löst sich die Rinde, liegt der Verdacht auf einen Borkenkäferbefall nahe. Unter der Rinde zeigen sich feingliedrige Gangsysteme, die auch bis ins Holz reichen können.
Additional Pistachio Tree Care
Although pistachio trees are long living, with a large tap root, and can grow to 20-30 feet (6-10 m.) seedlings can be grown in containers for the first three to five years and then transplanted into the garden. In the garden or orchard, trees should be planted 20 feet (6 m.) apart. Pistachio nut trees are dioecious; therefore, to get good crop set, both male and female trees are needed.
Pollination is through wind dispersal of pollen, which usually takes place in early to mid April. Stormy springs may affect the crop set by interfering with pollination.
Wie zukunftsfähig ist das Kleingartenwesen?
Peter Paschke meint in seiner Kolumne auf Seite 23 dieser Ausgabe, dass ausdrucksschwache Worte der Alltagssprache oftmals durch passendere Begriffe ersetzt werden sollten, um bestimmte Sachverhalte und Trends auszudrücken.
Pruning Pistachio Trees
Since these trees are classified as fruit trees, pruning pistachio trees is integral to producing higher quality fruit while controlling growth. For young trees, select the three to five branches you wish to use as scaffold branches or the primary structure of your pistachio in April of the first growth season. Choose those that are equally spaced around the trunk but not across from each other with the lowest branch 24-32 inches (61-81 cm.) above the soil and cut all other branches below this.
Remove any upper branches that will shade the tree trunk and pinch those that are not scaffolds to 4-6 inches from the trunk. Then in June, prune the scaffold branches to 2-3 feet (61-91 cm.) in length to promote side branching, while leaving the lateral shoots to aid in shading the trunk as it grows.
Maintain the open center structure as the tree grows taller by choosing secondary scaffold branches. You may prune two to three times a year, with summer pruning occurring in the spring and summer and dormant pruning in the fall.