Freesias tend to be grown in greenhouse conditions for the florist trade. Although, from surfing around, it seems the really warm zones and Californians have good luck with these and the others mentioned.

But, according to the literature, plant freesia outside in full sunshine so the tops of the bulbs are one and a half inches deep. Plant two to three inches apart in a good soil. Plant in late May in zone 4 or anywhere when the ground is warm enough to plant corn. Flowers should form in mid-to late summer.

Tigridia bulbs are subject to rot with too much water or bad drainage - a sunny dry spot would be best for those.

Ixia, plant in spring in a spot with good drainage.

I always thought sparaxis was a fall planted bulb - wouldn't have a prayer here in zone 4 even though I do see them at Menard's and the other home improvement stores... in the spring.

I've failed and given up on the more "exotic" little bulbs that are sooo tempting with their gorgeous package pictures. Nothing really exotic in my gardens, but the claim to fame is that everything is reliable year after year.

I grew Freesia and Ranunculus successfully in Phoenix AZ as perennial bulbs.

All the bulbs you mention grow with little care here. For you it is a matter of accommodating the bulbs to grow out of their normal zone. I hope you continue experimenting with them as they are all colorful and satisfying plants. Al