I have a very large pencil catus (about 5' tall) in a large pot. It has thrived in an area shared, and partly protected by, a shrub. While we do not get very many freezing night here in the Houston area, I am wondering if I could plant it in the ground and only cover it when a hard freeze is expected. Generally, we consider a hard freeze when the temperature goes below 30 degrees F for 4 hours or more. Does anyone have experience with these plants in the ground in cold weather conditions? I appreciate all of the information I have gotten here because I also had questions about propagating. But will now just take cuttings and plant them in damp soil in pot for starters.