Treat the Apache Sunflowers like any other sunflower .. plant them where you want them. They grow in full sun.

The senna and the sonoran wildflower mix? I'd scatter them where you want them and see what happens. Most desert plants are really hard to start, and this lets them do what comes naturally.

Thank you! I'll give that a try =)

Welcome to the forum! We hope you'll post as much as possible as often as possible. Lazy gave you great advice, so let us know what you do and how it works out. Sunflowers are especially fun, aren't they? I usually start mine in mid-March through late April or so, for early summer flowers. They seem to do best (for me, anyway) with a spring sowing. The ones I start in mid-summer really struggle along.

Happy gardening and keep us posted!
Take care,
Grant

Sunflowers are so much fun and I heard they were really good starter plants for kids. I have a 5 year old son that enjoys helping me so I thought they would be great for him =) Oh there's a good question! Do ya'll know any more good plants for kids? Thanks again for the excellent advice! It seems to be working out well!!

~Ame