The Mary Sue Ittner Grant for Bulb Research is an annual competitive grant available to PBS members to support any aspect of basic research, field-work, conservation, education, and horticultural discoveries that are geared towards "bulbs". Any plant(s) that fits the definition of a bulb as defined by the PBS Wiki will qualify.
Calls for applications are usually made in Spring of each year. Currently, we're not taking applications, but you can have a look at last year's application form to find the information requirements:Application for 2021
Due date was: March 31, 2021