So I have ben trying to grow some of the higher elevation colder growing species of Anthuriums. Its a stretch here in hot hot florida for sure. I got an Anthurium metallicum a little over a year ago and it did extremely well until we hot the dog days of summer here, when the days were never under 95-98F and nights 75-78F. The plant, which had been steadily cranking out leaves, stalled out and stopped growing. I was afraid I would lose it, because a friend who has one farther South in FL said hers did this before it (sob! )died. SO I decided to take drastic measures and brought it into the house. During the day I hung it in my sunroom near the AC vent, and I out it out at night, then brought it in a gain the next mid-morning. While there wan't any obvious improvement (like a new leaf) there was also no decline. Now we have moved out of the 90's, into the daytime temp range of about 80-88 and 68-72 at night. I out it out in the greenhouse again, and just this slight change in temps caused it to resume active growth! Yesterday a new leaf came out! SO excited!