Dave makes a good point. If the squash tastes good or if you just want to grow it for decorative purposes and you want to save the seeds from it, then you need to take special precautions to prevent more cross pollination from happening. And by that I mean you have to hand pollinate them. Take a male flower from the plant you want to save seeds from and pollinate a female flower from the same plant with it. You have to be sure that the female flower wasn't already pollinated and after you do the pollinating you need to tie the blossom closed to prevent it from being pollinated with other pollen. Be sure to mark the squash in some way (like loosely tying a piece of string around the stem so as not to girdle it) so that you know which ones are pure. Even after doing this, it could take years to stabilize the traits that you want. The pumpkins I mentioned in my previous comment are the only type of squash I grow which means I don't have to worry about cross pollination. So the thought of even more crosses happening didn't cross my mind (pun intended). And a melon and squash can't cross. Rodney

Wallas are a little more top shaped, longer from neck to roots than storage onions. Copras are much more globe shaped and have a darker outer skin color. Also if you slice a walla, the rings are thick, copras have tight, narrow rings. I jokingly add that usually in my field, the wallas are the ones that are often bolting..... Hope this helps a bit, -Mark

Pretty difficult to tell apart. Blaumeise (aka Teller Blue, Blue Tit and Blue Sky) has larger inflorescences (9" across) and the ability to reverse itself as the flowers age - as illustrated by the inverted sterile sepals showing in your first photo. Both will be a very intense dark blue in proper soil conditions.

My heliopsis helianthoides 'Sunstruck' has been slow to establish, but I love the variegated foliage, so I am willing to give it more time, although the blooms are rather similar to a few of my coreopsis. Helianthus 'Lemon Queen' was added to my garden as divisions and did so poorly the first year (no blooming, no growth) I assumed they wouldn't even come back. Imagine my surprise when they grew into the largest clump of flowers in my yard in their second year, completely dominating the entire border and hosting something like 87 million pollinators. It was a sight to behold, and now I never want a garden without that particular cultivar again.