Oxheart Carrot
A short, thick heirloom carrot shaped like a fat cone, ideal for heavy clay soils where long varieties cannot penetrate.
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Meet Oxheart Carrot
A short, thick heirloom carrot shaped like a fat cone, ideal for heavy clay soils where long varieties cannot penetrate. Roots are only four to six inches long but can weigh up to a pound with a broad, stocky shape. The flesh is sweet, tender, and almost coreless, excellent for juicing and cooking. Best grown in raised beds or loosened soil for the smoothest roots.
When to plant Oxheart Carrot
Direct sow Oxheart carrot seeds 3-4 weeks before last frost, as transplanting damages the taproot. Plant 1/4 inch deep in moistened soil. Mix tiny seeds with fine sand for even distribution across the row. Cover with vermiculite rather than soil to prevent crusting. Mist daily until germination in 10-21 days. Thin to 4 inches apart at the 2-inch stage since Oxheart needs more space than slender varieties. For container growing, use pots at least 8 inches deep and 12 inches wide. Fall sowing 10-12 weeks before first frost produces the sweetest roots.
Your Oxheart Carrot Year
Composed for Zone 7 · typical seasons · frost passes Apr 2, returns Nov 1
Sow Oxheart Carrot Mar – Apr, Jul – Aug, pick Jun – Jul, Oct – Nov. Set your climate below and every date on this plate re-times itself.
How to grow Oxheart Carrot
Oxheart carrots are the ideal choice for gardeners with heavy, shallow, or rocky soils. Their short, broad shape only needs 6 inches of loose soil depth compared to 12+ inches for standard varieties. Prepare beds by loosening soil and mixing in compost to improve tilth. Sow seeds 1/4 inch deep in rows 12 inches apart, starting 3-4 weeks before last frost. Keep seedbed consistently moist for the 14-21 day germination period.
Thin seedlings to 4 inches apart when they reach 2 inches tall, as Oxheart roots need more lateral space than slender varieties. Maintain steady moisture to prevent cracking, but the thick roots are more forgiving of brief dry spells than thin carrots. Mulch with straw to keep soil cool and retain moisture. Avoid fresh manure or excess nitrogen which causes forking and hairy roots.
This variety excels in containers at least 8 inches deep, making it perfect for patio and balcony gardens. Succession plant every 3 weeks for continuous harvest. Fall-planted Oxheart carrots develop the sweetest flavor after light frosts convert starches to sugars. In mild climates, grow through winter with a protective mulch layer.
288 plants fit a 4 × 8 ft bed
Each Oxheart Carrot wants 10 cm of elbow room. The planner keeps that spacing for you — every plant, every bed.
Oxheart Carrot's best neighbours
Oxheart carrots pair well with alliums like onions, garlic, and chives that deter carrot flies. Lettuce and spinach provide ground cover that keeps soil cool and moist for developing roots. Peas and beans fix nitrogen for subsequent crops. Tomatoes are beneficial neighbors whose solanine deters carrot pests. Avoid planting near dill or Queen Anne's lace which can cross-pollinate. Radishes planted alongside mark the row and break soil crust for emerging carrot seedlings.
Peas belongs beside it. Dill doesn't.
Old growers' knowledge, checked against Oxheart Carrot's real companion table below — test any plant you're growing.
Related growing guides
Feed it well
Oxheart carrots tolerate heavier soils than most varieties but produce the smoothest roots in amended loam with a pH of 6.0-6.8. Work in 2-3 inches of compost before planting. Avoid high-nitrogen fertilizers that promote lush tops and hairy, forked roots. Use a balanced 5-10-10 fertilizer at planting, with phosphorus to promote root development. Side-dress with wood ash or potassium sulfate at 6 weeks for sweetness. In clay soil, add coarse sand to the top 8 inches for improved texture.
Ideal Temperature
Hardiness Zone Compatibility
From seed to harvest, stage by stage
Seed Germination
Oxheart carrot seeds are tiny and slow to germinate, typically taking 14-21 days in soil temperatures of 10-25°C (50-77°F). The fine, thread-like radicle root emerges first, followed by thin grass-like cotyledons that look nothing like the ferny true leaves to come. Germination is erratic if soil crusts over or dries out.
Seedling Establishment
True leaves emerge with the characteristic feathery, finely divided carrot foliage. Growth is slow above ground as the young taproot begins establishing below the surface. Seedlings are delicate and easily overwhelmed by weeds at this stage.
Foliage Development
The ferny tops grow vigorously to 30-40 cm tall, forming a dense canopy that eventually shades out weeds. Below the soil, the taproot thickens rapidly and begins developing the characteristic wide, blunt Oxheart shape rather than growing long and tapered.
Root Bulking
The root expands dramatically in width, filling out the broad, heart-shaped profile that gives this variety its name. Shoulders may reach 8-12 cm across while the root stays only 10-15 cm long. Sugar content increases steadily, especially as nighttime temperatures cool in late summer and autumn.
Maturity and Harvest
Roots reach full size at 80-100 days, weighing 300-500 grams each. The foliage may begin to yellow slightly at the tips. Unlike slender varieties, Oxheart can remain in the ground well past maturity without becoming woody — the dense flesh stays sweet and tender even at very large sizes.
Keep the seed bed consistently moist — cover with a thin layer of vermiculite or burlap until sprouts appear. Sow seeds only 6mm deep. Mix with radish seeds to mark rows and break soil crust for the slower carrots.
Caring for Oxheart Carrot month by month
What to do each month for your Oxheart Carrot
July
You are hereMake a final succession sowing for autumn and winter harvest (zones 5-8). Earlier sowings are now in the root-bulking phase and need consistent moisture. Hill soil around any protruding shoulders to prevent greening. Watch for carrot rust fly and cover with insect netting if needed.
Know exactly what to do in your garden — every month
One email at the start of each month: what to sow, plant, and tackle right now — for your Oxheart Carrot and everything growing around it. Plus a short starter course that helps you dodge the classic mistakes.
- What to do, right now
- Matched to your season
- Starter course included
Harvesting Oxheart Carrot
Harvest Oxheart carrots when the broad shoulders reach 3-4 inches across, typically 75-90 days after sowing. The stocky roots can weigh up to a pound each. Push a garden fork deep beside the row and lever roots up rather than pulling, as the broad shape grips the soil firmly. Harvest in cool morning hours for best crispness. A light frost before harvest converts starches to sugars for sweeter flavor. Baby Oxheart carrots can be pulled at 50-60 days when golf-ball sized for tender snacking.
assuming you sow when the window opens — set your real date
Pick Oxheart Carrot promptly and the plant keeps producing.
Storage & Preservation
Oxheart carrots store exceptionally well due to their dense flesh, lasting 3-5 months in the refrigerator or root cellar at 32-40°F. Their thick shape is ideal for chunking into soups and stews for freezing. Pressure can diced pieces for shelf-stable storage lasting 1-2 years. The nearly coreless flesh makes excellent purees that freeze smoothly. Dehydrate slices for lightweight storage. In mild climates, leave in the ground under thick mulch and harvest as needed through winter.
What goes wrong — and the fix
Carrot Rust Fly
PestRusty tunnels bored through roots by small cream-colored maggots, especially near the soil surface.
Aster Yellows
DiseaseYellowed, stunted tops with hairy, bitter roots that develop a metallic taste. Spread by leafhoppers.
Wireworm
PestNarrow tunnels bored straight through roots by hard, shiny orange-brown larvae of click beetles.
Troubleshooting Common Problems
Green shoulders develop when the broad tops are exposed to sunlight; hill soil around crowns regularly. Cracking results from irregular watering, especially sudden rain after dry periods. Forked roots occur in compacted or rocky soil despite this variety being more tolerant than long types. Poor germination is typical of carrots; keep seedbed consistently moist. Bitter or woody roots indicate the carrots were left in the ground too long in warm weather. Hairy roots signal excess nitrogen.
Growing Tips
- Do not amend Oxheart beds with fresh manure or nitrogen-rich compost — excess nitrogen produces lush, ferny tops with forked, hairy, bitter roots. Use aged compost or a low-nitrogen fertilizer (5-10-10) applied at planting time only.
- Oxheart is the ideal carrot for clay and heavy soils. Where Nantes and Imperator types fork and deform, Oxheart pushes its broad, blunt root straight down through dense ground. If your soil is truly heavy clay, grow Oxheart in raised beds with 20 cm of loosened soil and you will be rewarded.
- Thin early and thin aggressively. Oxheart needs 8-10 cm between plants — more than standard varieties — because the roots expand sideways to 8-12 cm across at the shoulder. Crowded Oxheart carrots produce stunted, misshapen roots.
- Water deeply and consistently, but avoid waterlogging. Irregular moisture causes the dense roots to crack and split as they expand. A soaker hose delivering 2.5 cm of water weekly is ideal. Mulch with straw to maintain even soil moisture.
- Sow in succession every 3 weeks from early spring through midsummer for continuous harvest. The final sowing, timed to mature during cool autumn weather, will produce the sweetest carrots of the season as cold temperatures convert root starches to sugars.
- Harvest Oxheart with a garden fork, never by pulling the tops. The wide shoulders grip the soil tightly and the tops will snap off, leaving the root stuck underground. Loosen soil on both sides of the row, then gently lever the roots upward.
- For winter storage, leave autumn-sown Oxheart in the ground and cover with 15-20 cm of straw mulch. In zones 6-9, carrots stored this way remain crisp and sweet through January or February and taste better than anything you could buy.
- Interplant Oxheart with onions, leeks, or chives — the allium scent confuses and repels carrot rust fly, the most damaging carrot pest. Alternatively, cover rows with fine insect netting from sowing time through harvest.
Pick your Oxheart Carrot
Guerande Oxheart
The classic French heirloom with stumpy 4-5 inch roots weighing up to a pound. Deep orange with very sweet flavor.
Danvers Half Long
Related heritage variety slightly longer at 6-7 inches but shares the broad-shouldered shape and clay soil tolerance.
Chantenay Red Core
Similar short, stocky shape with a distinctive red-orange core. Very productive and reliable in difficult soils.
Short 'n Sweet
Modern compact variety at just 4 inches, perfect for containers and very heavy soils. Excellent flavor for its size.
A packet of Oxheart carrot seeds ($2-4) contains 500-1000 seeds — enough to grow 50-100 kg of carrots worth $150-400 at grocery store prices of $3-4 per kg for organic carrots. Even accounting for thinning losses and imperfect germination, a single 3-meter row produces 10-15 kg of carrots worth $30-60. The massive individual root size of Oxheart means less prep work per kilogram compared to standard varieties. Carrots stored properly in sand or refrigeration last 3-6 months, reducing winter grocery bills substantially.
Quick recipes
Honey-Glazed Roasted Oxheart Carrots
35 minThick Oxheart halves roasted at high heat until deeply caramelized, then finished with a honey-thyme glaze. The dense flesh of Oxheart holds its shape beautifully and develops an almost creamy interior while the edges crisp and caramelize.
7 ingredientsCreamy Oxheart Carrot Soup
40 minA velvety, naturally sweet soup that showcases the intense flavor of Oxheart carrots. The dense, low-moisture flesh produces a remarkably thick and creamy soup without needing cream or potato as a thickener.
8 ingredientsOxheart Carrot and Ginger Slaw
15 minA bright, crunchy raw slaw that highlights the natural sweetness and firm texture of freshly grated Oxheart carrot. The wide, dense roots produce thick, satisfying shreds that hold their crunch far longer than standard carrot varieties.
8 ingredientsCulinary Uses
Oxheart carrots excel in cooking applications where their dense, nearly coreless flesh holds together beautifully. Roast whole or halved for an impressive presentation. Dice for hearty stews and pot roasts where they maintain their shape after long cooking. The sweet, smooth flesh makes outstanding purees and soups. Juice for exceptionally thick, flavorful carrot juice. Grate into cakes and muffins for moisture and sweetness.
What's inside
Health Benefits
- One of the richest food sources of beta-carotene, which the body converts to vitamin A — essential for vision health, immune function, and skin cell renewal. A single Oxheart carrot provides several days' worth of vitamin A.
- Contains lutein and zeaxanthin, two carotenoids that accumulate in the macula of the eye and provide protection against age-related macular degeneration, the leading cause of vision loss in older adults.
- Rich in soluble fiber that binds to bile acids in the gut, helping to lower LDL cholesterol levels and supporting cardiovascular health over time.
- Provides polyacetylenes (falcarinol and falcarindiol), unique bioactive compounds with demonstrated anti-inflammatory properties that may help reduce the risk of certain cancers according to preliminary research.
- The antioxidant combination of beta-carotene, alpha-carotene, and lutein in carrots has been associated with reduced risk of cardiovascular disease in large population studies — the deeper the orange color, the higher the concentration.
- Contains natural prebiotic fiber that feeds beneficial Bifidobacterium and Lactobacillus species in the gut, supporting a healthy microbiome and improved nutrient absorption.
Where Oxheart Carrot comes from
The Oxheart carrot (also known as Guerande) traces its origins to the market gardens of Guerande in the Loire-Atlantique region of western France, where it was developed in the 1840s-1850s. French market gardeners bred this distinctively short, wide variety specifically for the heavy clay soils common in the region — soils where the long, tapered carrots popular at the time would fork, twist, and break during harvest. The Oxheart's blunt, heart-shaped root could be grown successfully in shallow or rocky ground, making it invaluable to farmers with less-than-ideal soil conditions.
The variety quickly spread across Europe and arrived in North America by the 1880s, where it appeared in the seed catalogs of major companies like Vilmorin in France and W. Atlee Burpee in the United States. Victorian-era gardeners prized Oxheart for its exceptional storage qualities and its unusually sweet, dense flesh that made superior soups and stews. By the early 1900s, Oxheart was one of the most widely grown carrot varieties in home gardens on both sides of the Atlantic, valued for its reliability in difficult soils and its resistance to cracking and splitting.
The rise of commercial agriculture in the mid-20th century pushed Oxheart out of the mainstream in favor of uniform, long, slender varieties like Imperator that could be machine-harvested and packed efficiently. However, Oxheart was preserved by heirloom seed savers and has experienced a strong revival among home gardeners and specialty farmers since the 1990s. Its forgiving nature in clay and rocky soils, its exceptional flavor when roasted or pureed, and its impressive yields by weight make it increasingly popular in the modern kitchen garden. Today, Oxheart is recognized as one of the classic heirloom carrot varieties and remains a testament to the practical wisdom of 19th-century French market gardeners.
Oxheart Carrot: did you know?
Fascinating facts about Oxheart Carrot
Oxheart carrots were developed in France in the mid-1800s under the name 'Guerande' and quickly became the carrot of choice for heavy clay soils across Europe — their short, stout shape pushes through dense ground that would deform or fork a longer variety.
Oxheart Carrot questions, answered
When should I plant Oxheart Carrot?
What are good companion plants for Oxheart Carrot?
What hardiness zones can Oxheart Carrot grow in?
How much sun does Oxheart Carrot need?
How far apart should I space Oxheart Carrot?
What pests and diseases affect Oxheart Carrot?
How do I store Oxheart Carrot after harvest?
What are the best Oxheart Carrot varieties to grow?
What soil does Oxheart Carrot need?
Why are my Oxheart carrots forked or misshapen?
How big should Oxheart carrots be before harvesting?
Can I grow Oxheart carrots in containers?
Why are my Oxheart carrots green at the top?
How long can I store Oxheart carrots after harvest?
What is the difference between Oxheart and other short carrot varieties like Chantenay?
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From the “Growing guide” sectionCompanion conflicts, caught early
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From the “Companions” sectionReminders you'll actually act on
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From the “Harvest” sectionSuccession, scheduled
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From the “When to plant” sectionA record that gets smarter
Every harvest you log teaches it your garden. Next year's plan starts from what actually worked in your soil, not a textbook's.
From the “Overview” sectionPlant these alongside Oxheart Carrot
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