Use a potting medium with good drainage characteristics. Keep pH above 5.5 and avoid media components containing high levels of fluoride. Bent-tip can occur during production, especially under conditions of high light and water stress. 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.