Aglaonema is sensitive to fluoride and boron. Toxicity symptoms appear as necrotic spots on leaf margins and tips. New growth appears chlorotic, stunted and deformed. Avoid low temperatures or apply copper as a foliar spray or soil drench. Recommended rate for soil application is 1.5 pounds copper sulfate per 1,000 square feet.
Chilling injury appears as gray or yellow spots that develop into necrotic tissue.
Postproduction factors Light. Transport of plants under dark conditions is currently the most common method of shipment. If holding is necessary before sale or installation, maintain plants under at least 50 fc of light. Acclimatized plants can be shipped without damage for extended periods. Maria' travels well when held at 55 to 65 F. Fransher' can be held at 55 to 60 F for up to 14 days but should be stored at 60 to 65 F if additional time is required.