Pre-chilling Instructions for Zones 8-11
Tulips are specialized plants that require a change of seasons and a cold period to grow. Since temperatures in your region may not meet this cold temperature requirement (40-45°F for 6 weeks), your tulips may not grow properly. If you live in a warm region your bulbs must be pre-chilled.
1. Start bulb pre-chill treatment by the third week in November.
Your bulbs must be pre-chilled in a refrigerator. Place the bulbs in a brown paper bag with moistened peat moss. Refrigerate (cold treat) your bulbs at 40-45°F for at least 6 weeks to satisfy bulb dormancy requirements. Do not remove them until you are ready to plant in the first week of January.
Important Note: Do NOT store fruit in your refrigerator next to your bulbs. Apples and other fruits give off ethylene gas, a natural by-product of ripening fruit. This gas could kill or delay the tulip flower buds.
2. All warm-region gardens must be planted during the FIRST week of January.
This date has been set in order to standardize all gardens. If your school extends the holiday break beyond the first week of January, please contact us.