Yes, we are Sunset 3B here.... The sunshine on most days and temps in summer is the reason so much agriculture grows successfully here. Of course, they irrigate. I am surprised Wenatchee is the same zone as us, but I guess it doesn't take into account the amount of snowfall they get (They are probably the -15f extreme.. we are more like -5f.) RE: the suitability of the trees I listed, The Thornless Honeylocust seems to thrive here, it does well in alkaline soil and is drought tolerant. As a prairie tree, it thrives in full sun. I have noticed many honeylocusts in yards that do not irrigate, growing just fine... The list of negatives of the tree is pretty short, and it seems very adaptable to our conditions. Linden -- RE: irrigating, I don't know. We will have some lawn on the property, so a tree/trees in that area would get more water. Linden tolerates alkaline soil and has small leaves... Thus, it seemed to be an *option.* ash -- I still have to go to our local extension office.. I will ask them about borers here. Ash also tolerates alkaline soil and was another option for my lawn area. If the borers are that bad here, I won't consider it.

You are 100% correct on the hawthorn hybridization, they seem ready to jump in the sack with any other hawthorn that is in bloom at the same time. A good example of natural/semi-natural inter-specific hybridization could be those blight resistant selections of american chestnut. Seeing that the Chinese chestnut is resistant, and there have been some intentional hybridizations to introduce blight resistance, I would be very surprised if there wasn't some natural inter-specific hybridization between the two; as well as with the various chinquapin species.

All members of the genus Malus can freely cross breed these Include : mountain ash, hawthorn, apples , flowering crab apples, and about 20 others. the edible quince,Japanese quince,pear ,Asian pear, apple, crab apple can all crossbreed . but the F1 are disappointing .all raspberries ,dewberries, loganberries, mulberries , wine berries, black caps, blackberries can crossbreed. As to the rest 1. Grayleaf raspberry (R. ideaus spp. strigosus) vs. European common raspberry (R. ideaus spp. ideaus)? 2. The various American blackberries vs. the various European blackberries and native/non-native forced hybrids? 3. The various native plums with Prunus domestica or P. tomentosa (I think I read that P. tomentosa (Nanking cherry) will freely hybridize with P. pumilla (sandcherry)? they have crossed the sand cherry with the plum in the 1970's 4. The various native crabapples with Malus domestica/pumilla? 5. American mountain ash with European or Asian pear, or the quinces, or at least with European mountain ash? Same for chokecherries since, I think I remember, that Pytina/Aronia can hybridize with Sorbus americana. 6. The various native plums with the man-made plum hybrids?Luther Burbank crossed Beach plums with domestic plums to give them Hardyness 7. "The native plums with peach/nectarine or almond? yes available" 8. The native mints and onions with the European garden species.You can cross onions with onions and onoins with garlic ( shallots) but you can not cross them with leeks. 9. The native silverberries with non-native Eleagnus spp. (Russian olive, Autumn olive, goumi). 10. The native honeysuckles (Lonicera spp.) with the increasingly popular blue honeyberry/haskap (Lonicera k... forgot). AND NATIVE VS NATIVE: 1. Forb/herbs like the Agastache spp. within themselves, the Monarda spp. within them selves, and so on. It seems that there are not many natural intermediaries between species in the same region - yet, maybe which mixing members of a genus that are regionally exclusive of each other, the likelihood for chance hybridization is greater? For instance, are the various Rhododendron spp. of a given area unlikely to hybridize with each other and same of the blueberries of a sub-region, yet when you plant Rhododendron spp. and, respectively, blueberries with their cousin species from opposite coasts, will hybridization occur more frequently? You can cross high bush Rhododendron with azaleas and Pjs I which that there were an online resource cataloging natural compatibilities within familiar horticulture genus. Purpose: I don't want to plant any foreign plant near my natives that would be cross-fertile. I would plant Prunus tomentosa if only it wouldn't supposedly readily hybridize with P. bessyi. Thanks, Now can you answer this one for me loquats can be grafted onto pear trees but can they crossbreed with pears ?

Here to the T5 and then to a 600 watt metal halide full spectrum, with mylar. I have experience with indoor lights. I was only going to grow it as an annual and save cuttings, but you can cut them to a stump and they'll still leaf out. I need a heated greenhouse. Apple of Sodom? Well, if they were eating them that would explain their rude behavior. It would be worse than eating artichoke silk.They do really use the sap for poison arrows. No fire and brimstone wilt come nigh my house! Here's a log of a member growing Calotropis from seed. She has since mysteriously dissapeared. And she's from Arkansas! It's good you kept the Impatiens. https://www.gardenweb.com/discussions/4453958/growing-calotropis-procera-from-seed