You get purple carrots by growing specific varieties that naturally produce anthocyanin pigments, rather than by dyeing orange carrots or crossing them with beets.
If you’ve ever wondered how do you get purple carrots, the short answer is that it’s all in the seeds and the genetics you start with.
Purple carrots actually came first historically, long before orange ones ever existed.
In this post, we’ll walk through how you get purple carrots, why they turn that deep violet color, and what you need to do in your garden to grow them successfully.
Let’s dig in.
How Do You Get Purple Carrots?
You get purple carrots by planting purple carrot seeds, because the color is determined by genetics from the very start.
You can’t turn an orange carrot purple after it’s grown, and you can’t make purple carrots appear by changing your soil or watering schedule.
The purple color comes from specific pigment compounds that certain carrot varieties produce naturally.
So if you want purple carrots, your first step is choosing the right seeds.
1. Start With Purple Carrot Seeds
The most reliable way to get purple carrots is to buy seeds labeled as purple varieties.
Popular options include Cosmic Purple, Purple Dragon, Black Nebula, and Purple Haze.
These seeds carry the genetic instructions to produce anthocyanins, which are the same pigments that make blueberries and eggplant purple.
If you plant orange carrot seeds, you’ll get orange carrots no matter what you do.
So how do you get purple carrots from seed?
You simply choose a purple variety and give it the right growing conditions.
2. Understand the Genetics Behind Purple Carrots
Purple carrots get their color from a dominant gene that controls anthocyanin production.
This gene was actually the original trait in wild carrots, which were purple or white long before orange carrots were cultivated.
Orange carrots only became dominant because Dutch growers selectively bred them in the 17th century.
So when you ask how do you get purple carrots, part of the answer is that you’re actually going back to the carrot’s roots, literally.
The genetics are already there in certain varieties, you just have to plant them.
3. Cross-Pollination Can Affect Future Seeds
If you’re saving seeds from your garden, keep in mind that carrots cross-pollinate easily.
Purple carrots can cross with orange ones if they flower at the same time and are close together.
The carrots you harvest this year will still be purple, but the seeds you save might produce mixed colors next season.
To keep your purple carrots pure, isolate them from other carrot varieties when they go to seed.
This is an important detail if you want to know how do you get purple carrots consistently year after year.
Why Purple Carrots Turn Purple
Purple carrots turn purple because of anthocyanins, which are powerful antioxidants.
These pigments develop as the carrot grows and are concentrated in the outer layers of the root.
That’s why many purple carrots are orange or yellow on the inside with a vibrant purple skin.
1. Anthocyanins Are the Key Pigment
Anthocyanins are water-soluble pigments that give plants red, blue, and purple colors.
They’re sensitive to pH, which is why purple carrots can look more red in acidic soil and more blue in alkaline soil.
This is the same reason red cabbage changes color when you cook it with different ingredients.
So the next time someone asks how do you get purple carrots, you can tell them it’s all about anthocyanin production.
2. Sun Exposure Influences Color Depth
While sunlight isn’t the main factor, good sun exposure helps carrots develop strong, vibrant colors.
Purple carrots grown in full sun tend to have deeper, richer hues than those grown in shade.
That said, the color is primarily genetic, so even shaded purple carrots will still be purple.
3. Soil Conditions Play a Supporting Role
Healthy, loose soil helps carrots grow straight and strong, which supports good pigment development.
Purple carrots prefer well-drained soil with a pH between 5.5 and 7.0.
Too much nitrogen can lead to leafy tops but smaller, less colorful roots.
So while soil doesn’t determine whether you get purple carrots, it does affect how well they turn out.
Tips for Growing Purple Carrots Successfully
Growing purple carrots successfully comes down to giving them the right conditions from seed to harvest.
They need loose soil, consistent moisture, and plenty of patience.
1. Plant in Loose, Rock-Free Soil
Carrots need loose soil to grow straight and long.
Rocks, clumps, or compacted dirt can cause forked or stunted roots.
Mix in plenty of compost or sand to keep the soil light and airy.
2. Keep the Soil Consistently Moist
Purple carrots need steady moisture, especially during germination and early growth.
Dry soil can cause tough, woody roots, while soggy soil leads to rot.
Water deeply once or twice a week, depending on your climate.
3. Thin Your Seedlings
Carrots need space to grow, so thin them to about 2 to 3 inches apart once they’re a couple of inches tall.
Crowded carrots compete for nutrients and often end up small and misshapen.
Thinning also helps prevent disease by improving airflow.
4. Harvest at the Right Time
Purple carrots are usually ready to harvest 65 to 80 days after planting, depending on the variety.
You can pull them earlier for baby carrots or leave them longer for bigger roots.
Don’t leave them in the ground too long or they’ll become tough and woody.
So, How Do You Get Purple Carrots?
You get purple carrots by planting purple carrot seeds and giving them the right growing conditions.
The color comes from anthocyanins, which are naturally produced by certain carrot varieties.
You can’t turn an orange carrot purple after it’s grown, so it all starts with choosing the right seeds.
With loose soil, consistent moisture, and a little patience, you’ll be harvesting your own vibrant purple carrots in no time.
Happy gardening.