Spring Flowers

3. Method of manipulating plants to bloom out of their natural season using controlled environments
5. scientific name for a carnation
7. Plant that has been selected for desired traits & retains those traits when propagated
8. flowering plant that completes its life cycle in two growing seasons
11. require <12 hrs of darkness to flowers
12. require >12 hrs of darkness to flower
13. the process of increasing the number of plants of a particular species or cultivar
14. one of two main floral-producing holidays in the spring
15. genus (sci.) of the lily
16. Recurring cycle of uninterrupted light and dark periods a plant is exposed to
17. a plant that completes its life cycle, from germination to the production of seeds, within one growing season, and then dies

1. plants that live year after year
2. Responses of a plant to the relative lengths of daylight and darkness
4. building designed for the protection of tender or out-of-season plants against excessive cold or heat
6. a place where plants are propagated and grown to a desired size
9. Latin name for a daffodil
10. plant type that doesn't flower based on photoperiod