My planted tank is at room temp(no heater), and I trim weekly and everything has nice full leaves. I do use ferts and co2. I currently have hygro, a couple different anubius's, a couple different java ferns, tiger lotus, a couple different amazon swords, crypts, bacopa carolinia, ammania gracilis, dwarf ammania, and ammania rotundifilia. All grow great. The tank is currently at 72 deg F. Just see were your tank settles at room temp. If you want to pay for shipping in about two months(when it warms up a lot) I'll send you some good sized start from all of them.
-Greg