Cilantro is often easier to plan as a direct-sown herb than as a long indoor seedling project. Its useful season depends strongly on conditions and the harvest stage you want. A small repeat-sowing experiment is more informative than one very large batch.
Choose leaves or seed as the goal
Fresh leaf harvest and coriander seed production are different outcomes. Variety and season affect how quickly plants move toward flowering. Read the packet and use local guidance so your plan matches the part of the plant you want to use.
Use the spring window as a starting point
The calculator begins cilantro sowing two weeks before last spring frost. With May 1 frost, that means an estimated April 17 to May 1 window. Inspect the bed and weather before sowing, and do not assume a later hot-weather batch will behave like the first.
Keep succession modest
Two or three small batches let you observe emergence and useful leaf production. Label each round and note when it becomes less useful for your purpose. Adjust the next quantity according to what you actually harvest rather than repeating a fixed large number.
- Prepare a seedbed with appropriate moisture.
- Check spacing for your intended harvest.
- Stop repeating when seasonal conditions no longer suit the crop.
Choose Cilantro under Direct sow and compare two sowing rounds. Use actual harvest notes to decide whether the interval and batch size are helpful.
Plan my gardenOur guides offer general planning advice. Check the instructions for your seed variety and your local extension service before planting. We do not claim hands-on tests of products mentioned in buying guides.