Subsequently, harvest them, being careful not to damage the bulbs during the digging process. After lifting, dry the bulbs in a single layer in a well aerated area for a few days. Relative humidity should be greater than 90 percent. Store for as short a time as possible. Fresh cut Narcissus and tulips should not be hardened in the same water.
Daffodils exude a toxic substance that is severely detrimental to tulips.
After Narcissus are hardened in their own container, they may be used in an arrangement with tulips.