Within this division are some more difficult to grow than others.
I did not see this question until Ron's comment. By division you mean Section Calpidisca or do you just mean small terrestrial utrics in general?
If Section Calpidisca, I have not grown all of them but have two varieties of U. sandersonii and two varieties of U. livida (one is a named cultivar U. 'Merrie Heart', beautiful flowers). I have found them all to be easy growers and easy flowerers. U. 'Merry Heart' flowers for me with no effort at all.
- If you want to get U. biquimata, keep it isolated from everything else and be mindful of the small seeds getting on your skin when tending your plants (IE wash your hands before working with other plants). I keep mine physically isolated from the rest of my collection. I have read that the 'Betty's Bay' cultivar is not so invasive. Same comments regarding U. subulata. Also, if you trade with others, keep in mind that both of these are hard to get rid off once establish and many growers really do not like them, so if you have it you might want to be forth coming.
Now for general,
- Ron mentioned U. praelonga from section fillosa, I have also found this one to be an easy grower and it really cool because it produces two distinct types of leaves (I have yet to get it to flower though- then again, I have not tried very hard).
- I also grow U. longifolia (seed grown in fact) which can be a little more difficult (IME) but is a very cool species- nice big leaves and purple flowers. Key there is to grow it a little more orchidlike rather than flooded terrestrial like (I grow mine in an airy soil in a net pot- I have had the best luck that way). I see it as a good transition species to some of the more fussy ones.
-From the same section, U. tricolor I have found to be very easy but I have had a very hard time trying to get it to flower. Then again, I am one of those weirdos that does not grow his utrics for the flowers. For me- I like the foliage and the traps- flowers are icing on the cake. Still, tricolor is quite a fun puzzle and the leaves are beautiful!
- U. calycifida I have not grown myself but am trying to get them going from seed (thanks Maiden!). No germination yet. They are gorgeous though- love the foliage.
- U. reniformis (section Orchidioides) is also a cool one. I no longer have U. reniformis myself, I hope to replace it in the near future but I highly recommend it. Nice big round leaves. Also, the traps are nice sized so you can show your friends- great demo plant. I have seen that one grown both using epiphytic strategies (which is how I did it) and more sphagnum slurry-like, the sphagnum slurry plant looked amazing (which is interesting since it comes from section Orchidioides). Next time I get the species, I want to do a side by side growth comparison. U. reniformis was a little picky for me but I think I just chose a stupid soil mix, it was also one of the first Utrics I ever got (may have actually been the first). It does seem to be a little more humidity sensitive that some of the others I have grown.
- If you can get a U. fulva from Section Enskide (I hopefully have one coming in pretty soon here... import pending permit approval.... so I may have some cultivation perspective down the road), the flowers are incredible (that is one of the few species I am getting specifically for the flower)! I have never grown it myself so I do not know how fussy it is.