Last Spring, I planted several tigrida that I got either from Yucca Du or Plant Delights. I put them at the sloping base of a liveoak tree in rich loamy soil where they got bright filtered light all day. They were deeply soaked every 5-7 days. Two of the three plants put up some very scraggly sparse foliage and the other did nothing. There was never even the hint of a blossom. I was afraid that full sun in our very harsh summers would be too much for them. What did I do wrong? Do they need to be kept very moist? Companion plants were Cypella Herbertii and several oxallis and they all bloomed all season. Nearby, in the same bed, iris japonica are thick and thrive. Theresa Massey Austin TX, Zone 8B, 20-110F, approx 30" annual rainfall (long droughts punctuated by flash floods)