Yes, chives come back every year on their own. The chives perennial habit means one planting can feed you for a decade or more from the same spot in your garden. You plant the clump once and it returns each spring without any replanting. So you get years of fresh green tops from a single afternoon of work.
The plant looks dead in winter, and that scares a lot of new gardeners. Your green tops brown out and die back to nothing once hard frost hits, so the soil sits bare for months. But the clump is not gone. The moment your spring soil warms past about 40°F (4°C), fresh green spears push up right through the surface. You will see new growth weeks before most other herbs even think about waking up.
So how exactly do chives regrow instead of dying off like an annual? The energy lives underground in small bulbs at the base of the plant. When cold weather arrives, the chive goes dormant and pulls its food reserves down into those bulbs to wait out the freeze. An annual spends all of its energy on seed and then dies for good. A chives perennial plant saves its energy instead, so it can wake up and grow back the next season from the very same roots. That stored fuel is the whole reason your chives come back without help from you.
Cold is no real threat to this plant. Chives are tough down to USDA Zone 3, where winter lows reach -40°F (-40°C). They return on their own across Zones 3 through 8, which covers most of the country. That wide range is a big reason chives are one of the easiest herbs you can keep alive for the long haul. If you live anywhere in that zone span, your clump will come back like clockwork.
Plant chives once and they regrow every spring from the same clump for many years. They are a true perennial across USDA Zones 3 to 8, so you never replant them.
Getting them to return is mostly about what you do not do. Leave the roots in the ground over winter and resist the urge to dig out the dead-looking clump. Skip the fall cleanup that pulls up the base. The bulbs need to stay put so they can sprout when spring comes.
A few small habits keep the plant strong year after year. In the coldest regions add a light layer of mulch, like straw or shredded leaves, over the dormant clump after the ground freezes. This steadies the soil temperature and shields the bulbs from harsh freeze-and-thaw swings. Those swings can heave the bulbs up out of the soil and dry them out. Pull the mulch back in early spring so your new spears get full sun and fresh air.
Container chives need a bit more care than the ones in your beds. A pot freezes from all sides, not just the top, so the roots take a harder hit in winter. Move your pots against a wall or into an unheated shed once the cold sets in. The bulbs still go dormant in there, and they will push up green spears again when you bring the pot back out in spring.
One more job keeps an old plant productive. Every 2 to 4 years the clump grows crowded, and the center starts to thin out and slow down. Dig it up in early spring, split it into smaller chunks with roots on each piece, and replant them about 8 inches apart. You end up with several fresh, vigorous plants from one tired clump, and they all come right back the following year.
So you can count on chives for the long run. Put them in the ground once, keep the roots in place, mulch in hard winters, and divide them now and then. Do that and the same plant will green up every spring for ten years or more.
Read the full article: Chives Plant: A Complete Growing Guide