Herman Zimmerman

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since Sep 07, 2019
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Recent posts by Herman Zimmerman

Yes, pokeberry, also pokeweed. The entire plant is considered poisonous, including the berries.
4 years ago
Peaches are one of the more reliable fruits to grow from seed. The seedling trees are precocious and quite reliable at bearing edible fruit. In the past, propagation by seed, in contrast to graftage was standard practice in Spain. This practice helped to genetically select cultivated peaches for a high degree of reliable edibility.
4 years ago
There is much variation between fruits in regards to being able to propagate trees from seed and being either the same as the parent tree, or different yet acceptable vs unacceptable

1. All fruit trees grown from seed will need to pass trough a period of juvenility  before transitioning into the mature fruiting stage.

2. Some fruits have a percentage of seeds that are clones of the parent tree, (some mangoes and many types of Citrus). These plants still need to pass through the juvenile phase before flowering and fruiting. The fruit will eventually be identical to the parent tree's fruit.

3. The juvenile period varies tremendously between different types of fruit. Peaches have a very short juvenile period, Some apples can be as long as 13 years before fruiting.

4. Many fruits have been selected for large size above the mean for the type of fruit. Seedlings often produce smaller fruit than their parents (closer to the mean size for the type of fruit).

5. If the desire is to select a new, superior cultivar, hundreds to thousands of seedlings may need to be trialed to find a superior selection. Unless the new selection offers a unique quality (ripening time, size, flavor, hardiness, or disease resistance, there is little point in introducing it.

6. Most fruit tree seedlings will eventually bear fruit, and it may be unique.
5 years ago
Ilya is a cold hardy citrus breeder active on TropicalFruitForum. He is not a source for plants, rather he is breeding and selecting edible hardy citrus and has created new hybrids he is evaluating. With his scientific background, he is quite knowledgeable concerning Citrus genetics.
5 years ago
A few breeders off the top of my head: Bernard Voss in Germany, Ilya B. in Paris, France. Cultivars: Curafora, Venasca, 5* citrumelo, US 119. Sources: Bernard Voss Germany, Eisenhut (Switzerland), and Adavo (Czech Repermies.
5 years ago
Steve, in Pennsylvania P. trifoliata is reliably hardy in the southeast, but not as much in the north. Any scion grafted on to P. trifoliata for outdoor survival w/o protection needs to be nearly as hardy as P. trifoliata itself. The hardiest Citrus relative short of pure Poncirus are advanced hybrids between Poncirus and various other Citrus species. There are amateur Citrus breeders in both Eastern and Western Europe. There are cultivars surviving in Switzerland, France and Germany. There are a few amateur Citrus breeders in the US in Kansas, Virginia tidewater area and Pennsylvania among others. In a Pennsylvania test, a few specimens have survived -11.8 deg F with cold damage, but some stem tissue remaining alive. This test involved F2 citranges (hybrid between Poncirus and blood sweet orange). These are new selections and haven't been grown to fruiting. Fruit characteristics may be quite disappointing.

You are correct in thinking tender scions on Poncirus will fail in very low temperatures. Poncirus does provide a bit of additional protection to tender scions, but the protection is not very great.
5 years ago