How to tell it is ready

Leaves are ready to pick once plants reach about 6 to 8 inches tall, and the youngest, smallest leaves are the most tender and flavorful. Flowers are ready when the five-pointed blue stars have opened fully and the papery petals are firm and brightly colored. Avoid leaves that have grown large, tough, and heavily bristled.

How to harvest

Use scissors or clean fingers to snip individual leaves or stem tips, taking a little from each plant so it keeps producing. To harvest a flower, gently grasp the black center and pull the bloom free of its hairy green calyx, or pinch off the whole flower cluster. Handle blossoms lightly, as they bruise and lose color easily.

Timing

Harvest in the cool of the morning after the dew has dried, when leaves are crisp and flowers are freshly opened. Begin picking leaves roughly 6 to 8 weeks after sowing and flowers as they appear, then make repeated passes every few days through the season, which runs from early summer until frost. Days to maturity typically ranges from about 50 to 75 days depending on climate.

After the harvest

Keep cut borage cool and out of direct sun right after picking, and refrigerate it promptly. Rinse leaves gently only just before using and pat or spin them dry, since excess water hastens wilting. There is no curing step; simply cool, and wash at the last moment.

Tips

Pick regularly to encourage a steady supply of fresh growth and blooms, and remove spent flowers if you want to limit self-seeding. Gather flowers the same day you plan to use them for the brightest color, and always choose young leaves for the best cucumber flavor and least prickly texture.

General guidance for US home gardens. Timing varies by variety and region; check your local frost dates. Page updated Aug 4, 2026.