I think elaeagnus are very desirable because they are supposed to fruit early in the season. But there are only very few plants available in Australia and none is selected for fruiting. There is one Elaeagnus x ebbingei "limelight" available, is this suitable as fruit? It is sold as a hedge plant.
Otherwise I can import seeds from the following eleaegnus:
are these fruits worthwhile from seed?
Location: South Puget Sound, Salish Sea, Cascadia, North America
posted 7 years ago
I have sold and grown E. ebbingei, but didn't eat the fruit at the time. It didn't strike me as very prolific or the fruit very reliable. I DO grow E. multiflora, and find it very useful, it freezes nicely and is very fast to harvest despite berries the size of wild huckleberries. There have been some improved varieties out there. Mine are seedlings and very late ripening (which might be due to my climate.) It might disperse aggressively in the right climate.
Paul Cereghino- Stewardship Institute Maritime Temperate Coniferous Rainforest - Mild Wet Winter, Dry Summer
I wish I knew what species it is, but I've found an evergreen Elaeagnus in a nearby city that has fruited the past two years in January in zone 6. It's not extremely prolific, but more than I've heard reported for ebingei.
I'd say they're definitely worthwhile from seed, just start way more than you have room for, select any that you like, chop and drop the rest. Even if you get no fruit you'll get the nitrogen and carbon fixation.