Your Beetroot is White Because of its Genetics
The most common reason for a white beetroot appearing in a crop of red beets is genetic heritage. The ancestral beetroot, from which all modern cultivars are derived, was a white-rooted plant. Over centuries of selective breeding, different colored varieties—including the deep red we are most familiar with—were developed. Sometimes, the recessive genes for the original white coloring can reappear, resulting in an occasional white beetroot, even if you planted a packet of red seeds. This is not an indicator of a problem with your plant or soil but rather a fascinating throwback to its ancient lineage.
Specific White Beetroot Varieties
Beyond genetic throwbacks, there are several deliberately cultivated varieties of white beetroot. Gardeners seeking a milder, sweeter flavor without the earthy taste of red beets often grow these types. Notable white beetroot varieties include:
- Albino White: A classic heirloom variety with sweet, round roots.
- Avalanche: An All-America Selections winner known for its uniform, snow-white flesh and mild flavor.
- Blankoma: Another variety bred for its white flesh and sweet taste.
These varieties are bred specifically to lack the betalain pigments that give red beets their vibrant color and distinctive earthy flavor.
Cross-Pollination and Seed Clusters
Beet seeds are actually small, dried fruit pods, and each pod can contain a cluster of multiple seeds. If you planted a packet of open-pollinated red beet seeds, it is possible that cross-pollination occurred between a red variety and a white or striped one at some point in the seed production process. This can lead to genetic variability, where one or more of the seedlings from a single seed cluster can grow into a white-rooted plant. Since bees and other pollinators carry pollen from one plant to another, cross-pollination is a natural occurrence and does not harm the plant. You can prevent this by purchasing seeds from reputable sources or by growing isolated, self-pollinated seeds.
Environmental Factors That Can Cause White Rings
While a completely white beetroot is usually a genetic matter, environmental stress can sometimes cause white rings to appear in otherwise red beets. This is often confused with an entirely white root but is a different phenomenon entirely. The primary environmental factors linked to this are high temperatures and inconsistent watering. When beetroots grow quickly under hot conditions or experience fluctuations in moisture, they can develop light-colored, woody rings inside the root. These rings are a result of rapid cell growth and do not affect the safety of the beet, though they may impact texture and flavor.
To prevent white rings:
- Provide consistent watering: Especially during dry spells, ensure your beets receive enough moisture.
- Mulch around the plants: A layer of mulch helps retain soil moisture and keeps the soil temperature stable.
- Harvest at the right time: Pull your beets when they reach the desired size, as overgrown roots can become woody and discolored.
Is White Beetroot Edible and What Are the Differences?
Yes, white beetroot is perfectly edible and often prized for its mild, sweet flavor. Unlike red beets, it won't stain your hands or cutting boards, making it a favorite for salads and lighter dishes. The primary nutritional difference is that white beets lack the red betalain antioxidants found in their red counterparts. However, their overall nutritional profile, including fiber, folate, and manganese, remains very similar.
Red Beetroot vs. White Beetroot
| Characteristic | Red Beetroot | White Beetroot |
|---|---|---|
| Flavor | Earthy, rich, and slightly sweet | Mild, delicate, and noticeably sweeter |
| Staining | High; leaves a vibrant, red-purple stain | None; ideal for dishes where color is a concern |
| Antioxidants | Contains betalain pigments, which are powerful antioxidants | Does not contain betalain pigments |
| Best Uses | Roasting, pickling, borscht, coloring dishes | Raw salads, juicing, light stir-fries, baking |
| Appearance | Deep red or purple flesh and skin | Pure white or cream-colored flesh and skin |
Caring for White Beetroot in Your Garden
If you find a white beet, you can simply care for it as you would any other variety. Ensure the plant receives adequate sunlight and consistent moisture. Mulching and weeding are also important for robust growth. The taste difference makes them an interesting and delightful surprise in your harvest. If you want to grow more white beets, you will need to purchase a specific white beetroot seed variety like 'Albino White' to ensure consistency.
Conclusion: Celebrate Your Unique Harvest
Finding a white beetroot should be a pleasant surprise rather than a cause for worry. The reasons range from genetic throwbacks and cross-pollination to the deliberate cultivation of milder, sweeter varieties. While a completely white beet lacks the betalain pigments of red varieties, it retains a similar nutritional profile and offers a milder flavor for a different culinary experience. By understanding the genetics behind this fascinating occurrence, you can appreciate the diversity of your garden and enjoy your unique, albino harvest. For more details on growing specific varieties, you can consult reliable resources like the Royal Horticultural Society's gardening guides for beetroot.
Planting White Beetroot for a Consistent Crop
For gardeners who intentionally want to cultivate white beetroot, purchasing heirloom or specialty seeds is the best approach. Plant the seeds in well-drained, fertile soil, and ensure they receive at least 6 hours of sunlight daily. Soak the seeds for a couple of hours before planting to speed up germination. Thin the seedlings to allow adequate space for the roots to develop, and maintain consistent moisture throughout the growing season.
Note: While some environmental factors can cause white rings, they are distinct from an entirely white root. White rings are often linked to rapid, uneven growth, whereas a fully white beet is primarily a genetic trait.
How to Harvest and Use Your White Beets
White beets, like other varieties, are ready for harvest when they are the size of a golf ball or larger. To avoid damaging neighboring plants, gently loosen the soil with a fork before pulling. You can use white beets in various recipes, such as adding them raw to salads for a sweet crunch or roasting them to bring out their mellow flavor. The leaves are also edible and can be cooked like spinach.