How to Grow Rubra Maxima Beet
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Rubra Maxima Beet
Beta vulgaris subsp. vulgaris var. conditiva 'Rubra Maxima'
vegetableRubra Maxima is a large, deep red storage beet variety prized for its substantial root size and excellent keeping qualities. This heirloom cultivar produces dark purple-red roots that can reach 4-6 inches in diameter with minimal internal rings, making it ideal for fresh eating and long-term storage.
When should you plant Rubra Maxima Beet in your zone?
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Example Rubra Maxima Beet timeline · Pittsburgh, PA (Zone 6b)
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Plant Rubra Maxima Beet
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Rubra Maxima Beet
Around Jun 21≈ 65 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Rubra Maxima Beet dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Zones 2-8; prefers cooler climates but tolerates moderate heat with consistent moisture
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Get my Rubra Maxima Beet timeline →Growth Stages
Germination
10-14 daysSeeds sprout with cotyledons appearing, soil temperature 50-65°F optimal. Beet seeds are actually seed clusters that may produce multiple seedlings.
Keep soil consistently moist but not soggy. Thin seedlings to single plants when 2-3 inches tall. This stage is critical for establishing strong root development.
Early Vegetative (Leaf Development)
20-30 daysPlant develops characteristic dark green foliage with prominent red veining. Leaves are large and deeply lobed. Root begins swelling underground but remains thin.
Maintain consistent watering and uniform moisture. Apply 2-3 inches of mulch to retain soil moisture and keep roots cool. Begin fertilizing with balanced fertilizer every 2-3 weeks.
Mid-Vegetative (Root Enlargement)
25-35 daysFoliage becomes dense and vigorous. The underground root rapidly increases in size, developing the characteristic deep red color. Root shoulder becomes visible at soil surface.
Maintain even moisture—critical phase for preventing splitting and ensuring tender texture. Avoid nitrogen-heavy fertilizers which promote excessive foliage. Side-dress with potassium-rich amendments.
Maturation (Harvest-Ready)
10-15 daysRoots reach 4-6 inches in diameter with smooth, deep crimson skin. Foliage remains green but growth slows. Roots are dense, sweet, and store-ready.
Stop heavy watering 2 weeks before harvest to concentrate sugars. Reduce nitrogen fertilizer entirely. Monitor for splitting if rains occur.
Storage
120 days+Harvested roots can be stored in cool conditions (32-40°F, high humidity) for 4-6 months. Maintains quality and flavor throughout storage period.
Leave 1-inch stem attached. Remove foliage completely. Store in damp sand, sawdust, or plastic bags in dark, cool location. Check periodically for sprouting or decay.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Remove affected leaves immediately. Use row covers over young plants. Spinosad spray or neem oil for severe infestations.
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Strong water spray to dislodge. Insecticidal soap, neem oil, or ladybug introduction. Reflective mulches deter population.
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Row covers until plants are 4 inches tall. Kaolin clay spray. Bacillus thuringiensis (Bt) if severe.
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Remove infected leaves. Improve air circulation. Avoid overhead watering. Copper fungicide in severe cases.
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Ensure excellent drainage. Avoid waterlogging. Practice crop rotation (3-year minimum). No fungicide cure; prevention essential.
Uses
Roasting, boiling, and fresh preparation
CulinaryRubra Maxima's large size and excellent texture make it ideal for roasting whole, boiling, pickling, or slicing into salads. The deep red color and sweet flavor intensify with cooking. Superior storage quality extends culinary use through winter months. [source]
Natural food coloring and preserves
CulinaryThe intense natural pigment (betalain) makes this variety excellent for beet juice, natural food dyes, and homemade preserves. Roots yield vibrant color suitable for naturally dyeing foods without additives. [source]
Nutritional and cardiovascular support
MedicinalBeets are rich in folate, manganese, and nitrates that support cardiovascular health and blood pressure regulation. Fresh juice or cooked roots provide bioavailable nutrients for dietary supplementation. [source]
Natural dye production
HouseholdBeet roots yield rich reds and purples for fabric and paper dyeing projects. The process creates non-toxic, natural colorants suitable for home craft applications. [source]
Livestock and poultry feed
WildlifeBeet roots and tops are nutritious forage for cattle, sheep, chickens, and rabbits. Storage roots can be fed throughout winter as a supplemental energy source. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when roots reach 2-4 inches for tender table beets, or allow to grow to full 4-6 inches for storage varieties. Twist off foliage 1-2 inches above root (do not cut, to prevent bleeding). Gently loosen soil with garden fork before pulling. For storage, harvest after first light frost when sugars concentrate. Can leave in ground in cold climates with heavy mulch for extended harvest.
Fun Facts
- 🌱 Rubra Maxima is an heirloom variety originating in Eastern Europe, particularly Poland and Russia, where large storage beets became essential for surviving long winters before modern refrigeration.
- 🌱 Beet seeds are actually seed clusters—each seed ball may contain 2-4 embryos, which is why thinning seedlings is crucial to prevent overcrowding and stunted root development.
- 🌱 Beets contain betalains, rare water-soluble pigments (distinct from anthocyanins) that give them their deep red color and are being studied for potential anti-inflammatory and anti-cancer properties.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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