answers are garden or wild flowers, vegetables or fruit ...
1. Mainly yellow flower but can be white (- L - - - - -)
2. member of the figwort family (- - - - T - - - -)
3. felines like this plant (- - - - -N -)
I've had a look at alyssum, and it seems that, although it can be yellow, it's usually white, so unlikely to be the right answer. Have any more letters appeared?