N.G. Heimos Greenhouses in Millstadt are holding their fifth annual Poinsettia Comparison Trial for growers and breeders from across the USA and abroad. The huge operation in Millstadt has both retail and wholesale operations. About 125 visitors from Europe, California, Florida and other states have been taking tours of the huge facility south of Millstadt on Illinois Route 158. The combined size of the poinsettia growing operation - inside and outside plantings - is about 50 acres. There are over one million plants at the facility, which is ranked in the top 25% of poinsettia growers in the nation. The Millstadt business will hold their annual Poinsettia Wonderland Open House this Sunday, November 18, from 9 a.m. to 4 p.m. It is open to the public. This is one of the larger greenhouses, part of the wholesale operations of the Millstadt company.