Cilantro leaves are ready to pick in 45 to 80 days from seed. The cilantro growing time is short because the plant races to make leaves before it flowers. Seedlings often poke up within one to two weeks of planting, and you can take your first pinch of leaves weeks before the plant looks full-grown.
That early pinch matters. You do not need to wait for a big, bushy plant to start eating. Once a plant stands about six inches (15 cm) tall, it has enough leaves to share. The cilantro days to maturity number on a seed packet marks the leaf harvest, not the last day you can use the plant. Treat that number as a starting line, not a finish line.
Weather sets the pace as much as the calendar does. Cilantro is a cool-season herb, and the cilantro growing time drops when days sit around 50 to 80°F (10 to 27°C). In that range, leaves come on fast and stay tender. When heat climbs past the high end, the plant rushes to flower and the leaf window shrinks. So the same seed can hit leaf harvest in 45 days in spring or much sooner in a hot snap.
Here is the part that trips people up. Cilantro gives you two harvests on one timeline, and each one hits a different milestone. The leaves come first, and that is the cilantro you chop into salsa or tacos. Later the plant bolts, flowers, and sets seed. Those dried seeds are coriander. So how fast cilantro grows depends on which crop you want from the very same plant.
The seed crop sits much further down the calendar. A coriander seed harvest needs roughly 100 days, or about three months, from planting. The plant has to grow leaves, send up a flower stalk, bloom, and then dry its seeds on the stem. The flowers draw bees and other helpers, and once the green seed balls turn tan and hard, the crop is ready. It is a longer wait than the leaf stage by a wide margin, but the spice is worth it.
Your variety changes the math too. Leisure can reach leaf harvest fast, in about 28 to 40 days, so it is a strong pick when you want cilantro in a hurry. Slow-bolt types stretch the leaf window instead of rushing it. Slow Bolt reaches leaf harvest around 50 days and holds off flowering longer in heat, which gives you more cuttings before the plant gives up.
To get the most from one planting, start cutting leaves early instead of waiting for the plant to fill out. Snip the outer stems once it hits six inches (15 cm), and the plant keeps pushing new growth from the center. Cut no more than a third of the plant at once so it can recover. If you want spice seeds, leave a few plants alone and let them flower. Those go on to give you a coriander seed harvest while the rest feed your kitchen with fresh leaves.
Sow seeds right where they will grow. Cilantro has a long taproot and hates being moved, so direct seeding beats transplanting and gets you to leaf harvest faster.
Plant a small batch every two to three weeks through the cool season and you will rarely run out. Each round overlaps the last, so fresh leaves keep coming even as older plants bolt. This trick is called succession sowing, and it turns one short harvest window into a steady supply. The cool months of spring and fall give you the longest runs before heat forces the plants to flower.
So plan around the crop you want, and the cilantro growing time falls into place. Pick Leisure for a quick leaf crop in 28 to 40 days, and lean on Slow Bolt at around 50 days when you want more cuttings in warm weather. Cut early, cut often, and let a few plants go all the way to seed. That single bed gives you fresh leaves now and your own free coriander in about three months.
Read the full article: Cilantro Plant: Complete Growing Guide
