Persimmons can be planted in winter, or early spring. They require a cold/moist period and then consider that they have a long tap root. If you will plant them in containers, make sure they are deep.
I've grown asparagus a few times from seed. it takes a long time to germinate (2-3 weeks). Don't give up!
The official suggestion is to plant it in spring, but i'm in 9b and grow year round, so I generally ignore these rules, your mileage may vary.
I just scatter asparagus seeds where I think I would like some. Some grows. More grows if it's a cleared seed bed, but even in rough weeds some will grow. A few!
There's no place like 127.0.0.1. But I'll always remember this tiny ad: