How to Grow Carrots

Step 1 - Timing

Direct sow from just after the last frost date to late summer for harvests from summer through early winter. Sow at 3 week intervals for a continuous harvest. Direct sow winter-harvest carrots (where winters are mild) in the first two weeks of August. Optimal soil temperature: 7-30°C (45-85°F). Seeds may take as long as 14-21 days to germinate.

Step 2: Starting

Because carrot seeds are tiny, they need to be sown shallowly. The trick is to keep the top-most layer of soil damp during the relatively long germination period. Water deeply prior to planting. Direct sow the tiny seeds 5mm (¼”) deep, 4 seeds per 2cm (1″), and firm soil lightly after seeding. Make sure the seeds are only just buried. Water the area with the gentlest stream possible, and keep it constantly moist until the seeds sprout.

Step 3: Growing

Ideal pH: 6.0-6.8.

The softer and more humus-based the soil, the better. When soil is dry enough in spring, work it to a fine texture. Broadcast and dig in ½ cup complete organic fertilizer for every 3m (10′) of row. Avoid fresh manure. Carrots will become misshapen, but still edible if they hit anything hard as they grow down into the soil. Keep weeded and watered.

Step 4: Germination

Days to maturity: From direct sowing.

In optimal conditions at least 60% of seeds will germinate. Usual seed life: 3 years.

Step 5: Thinning

This is the process of removing some seedlings, if necessary, so each has enough space to grow in the row. It is very important to thin carrots so they don’t compete for available nutrients, moisture, and light. Thin to 4-10cm (1½-4″) apart when the young plants are 2cm (1″) tall. Use wider spacing to get larger roots. As they grow, carrots may push up, out of the soil, so hill soil up to prevent getting a green shoulder.

Step 6: Harvest

Carrots can be harvested at any size, but flavour is best when the carrot has turned bright orange (or its other mature colour). After harvest, store at cold temperatures just above 0ºC. Store in sand or sawdust, or simply leave carrots under heaped soil in the garden during the winter, and pull as needed.