Editor’s Tip: To keep your hydrangeas fresh, store them in medium light at temperatures below 70 degrees. Editor’s Flower Tip: To keep your amaryllis fresh, expose it to bright light as much as possible. Editor’s Tip: Cymbidium orchids do best in bright light and when they are watered weekly. Editor’s Tip: Watering once a week will keep your festive orchid fresh for the whole holiday season. Editor’s Tip: Cut poinsettias can last up to two weeks.