More information is needed to give a meaningful interpretation. Colors in a dream are not significant in themselves, and "vegetable" is a very broad category. Very generally, green vegetables tend to be regarded as healthy but not particularly palatable. So the dream MIGHT refer to something the dreamer knows needs to be done in spite of its not being much fun.
varicose veins
Yes. The red color is a bonus pigment that contains beta-carotene, but the cabbage is still classed as a green vegetable
Yes
Lettuce - a green leafy vegetable
The leafy green vegetable is spelled broccoli.
Watercress
yes it is Celery
No. Along with carrots, parsnips, and beets, celery is considered a minor vegetable crop- not a leafy green.
No, it is a noun. It refers to the green leafy vegetable or the plant it grows on.
Lettuce is a vegetable. It is green and leafy and does not contain seeds. It is used in salads.
leafy green vegetable such as spinach,broccoli, salmon,
The correct spelling of the green leafy vegetable is spinach.