Ken: If you want a red raspberry that will continue to produce through very hot periods, look for Baba, aka Bababerry. This berry was originally found near Los Angeles, and is better adapted to heat than any other that I know of, except perhaps for some of the Australian cultivars that I have not tried. I have been growing Baba here for years, and it has been an excellent producer with no disease problems. Heritage was a complete bust for me, with low to negligible production. I don't know how difficult it would be to find Baba for sale (I seldom see it), but the west coast would probably be the best place to look. You have to make sure you find a source reliable enough that you can depend on obtaining the real article, not some other variety labeled as Baba. Personally, I wouldn't even bother trying to grow any variety other than Baba in very hot conditions. Quality of the berries themselves is as good or better than any other variety I have seen; good for fresh use and wonderful for the classic Jellyman raspberry jam. If you want a real treat, make a pie. Don Yellman, Great Falls, VA

I'm not sure on Latham, but yes on shortness. I grow Fall Gold and other yellows that never go past 36 inches. Each cultivar for sure is different.

Yes, I picked up 9 of them at Walmart here in Rocky Ford CO. We have very High alkaline soil. I planted them on April 7, 2017. Today May 18, they are doing very well. I dug a hole, put some mulch, straw, peat moss and dirt around them. My soil is clay like, gets very hard. I wanted to give the roots a less compacted place to grow. I'm pleased. They are twice as tall, doing very well.

Thank you! Based on my Google search, it appears that this "plant" can be invasive. Since its growth is intermingling with our raspberries, I will be getting the shovel out tonight and composting the unwanted plant.