Carrots are originally from Central Asia, and the wild ancestors weren't even orange — that color's actually a relatively recent development, bred deliberately by Dutch growers a few centuries back. KVITER offers two heirloom Daucus carota subsp. sativus varieties — a rainbow blend, and a classic long orange type bred specifically for sweetness. Both are non-GMO and open-pollinated, so seed saved from a carrot left to flower grows true the next season. Check KVITER's full vegetable seeds catalog for whatever else the bed needs once carrots come out.
How to Plant Carrot Seeds
- Loosen soil to at least 12 inches deep, removing rocks and breaking up clay clumps.
- Direct sow carrot seeds for planting ¼ inch deep, about 1 inch apart, in rows 12-18 inches apart.
- Keep soil consistently moist during germination — carrot seed is slow and uneven, often taking 14-21 days to sprout.
- Thin seedlings to 2-3 inches apart once they've got a couple true leaves; skipping this step is the single biggest cause of small, twisted roots.
- Water evenly through the season; a wet-dry cycle causes cracking.
- Harvest once roots hit full color and size for the variety — pulling one to check is the easiest way to know for sure.
Carrot Planting Windows by USDA Hardiness Zone
In Zone 3–4, carrots go in the ground in mid-May for a spring sowing, with a fall sowing in late July. Expect harvests around mid-to-late July and again in October.
In Zone 5, spring sowing happens in late April, with fall sowing in early August. Harvest arrives around mid-July and again in late October.
In Zone 6, spring sowing falls in mid-April, followed by fall sowing in mid-August. Expect harvest in early July and again in November.
In Zone 7, spring sowing takes place in late March, with fall sowing in late August. Harvest comes in late June and again in late November.
In Zone 8, spring sowing starts in late February, with fall sowing in mid-September. Expect harvest around mid-June and again in December.
In Zone 9, spring sowing happens in late January, with fall sowing in October. Harvest arrives in late May and again in January.
In Zone 10, carrots can be sown year-round as long as you avoid peak summer heat, with an additional fall sowing window in October–November. Harvest timing varies accordingly.
Carrots tolerate cold better than most root crops — a light frost won't damage mature roots, and in many zones they can actually stay in the ground past the harvest window with a layer of mulch for protection.
Why Gardeners Choose KVITER Seed
KVITER offers seed picked for gardeners who care about what they are growing. Every packet gets germination-tested before it's listed for sale, and both varieties here are genuine heirloom, open-pollinated lines grown without a single GMO input. Rainbow Blend in particular does well as a container vegetable seeds pick for anyone without deep garden soil, since a large pot gives more control over texture and drainage than rocky native ground ever will.
- High germination rate on every packet, verified before listing
- 100% heirloom, open-pollinated varieties — save your own seed year after year
- Non-GMO seeds, never treated with synthetic coatings
- Detailed growing notes on every product page
- Free shipping on all orders over $49
Frequently Asked Questions
How long does it take to grow carrots from seed?
Most varieties, including Tendersweet, take 70-80 days from sowing to full-size roots. Rainbow Blend runs similar, though individual colors within the mix can mature at slightly different rates.
Is it better to plant carrots in spring or fall?
Both work well. Spring sowing gives an earlier harvest; fall sowing, timed so roots mature after a light frost, tends to produce sweeter carrots since cold triggers extra sugar production in the root.
Do carrots need to be thinned?
Yes, and it matters more for carrots than most root vegetables. Crowded seedlings competing for space produce thin, twisted roots — thinning to 2-3 inches apart gives each root room to size up properly.
Can heirloom carrot seeds be saved and replanted?
Yes. Carrots are biennial, so a root left in the ground through a second season will flower and set seed that grows true, since both KVITER varieties are heirloom.
