Days toflower from transplant and number of nodes at flowering were measured on each plant. As MDT increasedfrom 14 to 26◦C, days to flower decreased for all crops except Impatiens walleriana. Linear or nonlinearregression analysis was performed on the flowering rate (reciprocal of days to flower) data to estimatethe base temperature (Tmin) for each species, which is the temperature at which the flowering rate iszero