Hybrid. This compact yet full-flavored variety won't shade out its neighbors; no matter how small your space, you have room for fennel. This is a cool-weather herb, yielding spring and fall crops. The plants are very uniform and resistant to tip burn. Add the firm anise-flavored stalks and feathery leaves to poultry stuffings, slice the smooth white bulbs into green salads or slow-roast drizzled with olive oil.