Trumpet, or Hummingbird Vine Orange/ Red Flower, 20 Seeds! Groco* RED/ ORANGE TRUMPET VINE OR HUMMINGBIRD VINE (Campsis radicans) WINNER/ BUYER GETS APPX. 20 SEEDS!! Perennial red/orange blossoms Up to 20 ft vine, or more!! Sun or part shade Hardy zones 4-9 Trumpet vines are easy to grow and will cover almost any kind of support. We never had hummingbirds in our yard until we got one of these. Even the feeders didn't attract them, but now that we have a hummingbird vine, we have hummingbirds!! Comes with planting instructions, but refer back to this listing for specifics. Germination can be improved with 30 to 60 days of moist stratification at 34-41 degrees F. Or plant outside in fall and water once a month if no snow Stratification: Some seeds need a period of moisture and cold after harvest before they will germinate-usually this is necessary to either allow the embryo to mature or to break dormancy. This period can be artificially stimulated by placing the moistened seed in a refrigerator for a certain period of time (usually 3- 5 weeks at around 41 F). With tiny seeds it is best to sow them on moistened compost, seal the container in a Polythene bag and leave everything in the refrigerator for the recommended period. However, larger seeds can be mixed with 2-3 times their volume of damp peat, placed direct into a Polythene bag which is sealed and placed in the refrigerator. Look at seeds from time to time. The seeds must be moist whilst being pre-chilled, but it doesn't usually benefit them to be actually in water or at temperatures below freezing. Light also seems to be beneficial after prechilling and so pre-chilled seeds should