No. ‘Sugar Baby’ is an open-pollinated diploid variety that normally produces seeds. It therefore does not require a distinct pollenizer cultivar like triploid seedless watermelons, but female flowers still need pollen carried by bees. Avoid insecticides during bloom, remove floating covers once female flowers appear, and grow nearby flowers to support pollinators.
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Early organic seeded icebox watermelon
Cucurbitaceae
Organic watermelon seeds
Organic ‘Sugar Baby’ watermelon (Citrullus lanatus ‘Sugar Baby’)
Citrullus lanatus ‘Sugar Baby’
‘Sugar Baby’ is an early organic icebox watermelon producing round fruit with very dark green rind, nearly black at maturity, and red fine-textured juicy sweet flesh. Pépinière.ca lists 25 seeds, fruit 18–20 cm and 3.5–4.5 kg, plus spread of 1.5–2 m. Johnny’s lists 76 days and generally one or two fruits per plant. This is an open-pollinated seeded variety.
Quantity
About 25 seeds
Exposure
Full sun
Difficulty level
Moderate
Discover the plant
Family
Cucurbitaceae
Genus
Citrullus
Species
lanatus
Cultivar
Sugar Baby
Type
Early organic seeded icebox watermelon
Cycle
Annual
Organic ‘Sugar Baby’ watermelon (Citrullus lanatus ‘Sugar Baby’) is an early icebox-type watermelon known for round compact fruit. At maturity the very dark green rind becomes nearly black and protects red juicy fine-textured sweet flesh. Pépinière.ca lists fruit 18–20 cm in diameter weighing 3.5–4.5 kg. Their size chills easily and suits small families, snacks, fruit salads, and summer desserts.
Start plants three to four weeks before transplanting in individual pots so roots are not disturbed. Keep mix warm, then transplant only after frost risk once soil exceeds approximately 21°C and nights are mild. Choose full sun and deep fertile very well-drained soil, then space plants to let vines run. Maintain even moisture during establishment, flowering, and early fruit enlargement; reduce excess watering near maturity.
Johnny’s lists approximately 76 days to maturity and describes round fruit 15–20 cm across averaging 3.6–4.5 kg, generally one or two per plant. The Biologiquement Vôtre profile lists 25 seeds and vines 30–40 cm tall spreading 1.5–2 m. To judge ripeness, watch the tendril nearest the fruit as it browns and dries and the ground spot as it changes from greenish white to cream-yellow. Cut the stem instead of pulling the fruit.
Planting guide
From planting to establishment.
Planting depth
Approximately 1.3 to 2.5 cm (½ to 1 in)
Spacing / density
Approximately 60 to 90 cm (24 to 36 in) between plants
Establishment temperature
Approximately 27 to 32°C (80 to 90°F) until germination
Establishment time
7 to 14 days
Best planting time
Start three to four weeks before last frost; transplant after frost once soil exceeds approximately 21°C
Propagation
Seed
Growing method
Sow two seeds per individual 5–8 cm pot, 1.3–2.5 cm deep, three to four weeks before transplanting. Keep at 27–32°C until emergence, then retain the best plant without separating roots. Harden gently and transplant after frost into soil above 21°C without burying the stem. Space 75–90 cm in-row and allow 1.8–2.4 m between rows. Water, mulch, and remove covers once female flowers appear.
Soil and care
The right conditions.
Exposure
Full sun
Soil pH
Approximately 6.0 to 6.8
Minimum temperature
10 °C (50 °F)
Watering
Water deeply at soil level while vines establish, bloom, and develop young fruit. Maintain steady moisture without waterlogging soil; alternating drought and excess water may cause stalled growth, cracked fruit, or uneven quality. Mulch limits evaporation and keeps fruit cleaner. Avoid wetting foliage unnecessarily and water in the morning. As fruit approaches maturity, continue preventing severe stress but do not keep ground constantly saturated. In containers, check daily during heat and ensure free drainage. Adjust irrigation to rainfall, soil texture, vine size, and fruit load instead of following a fixed calendar.
Soil type
Choose deep loose very well-drained warmed soil enriched with mature compost. Watermelon needs more heat than lettuce or root crops; a south-facing mound, black fabric, or plastic mulch may accelerate spring warming. Ground must hold enough moisture for long vines while draining excess promptly. Aim for pH approximately 6.5–7.5 following Johnny’s guidance. Avoid fresh manure, cold waterlogged areas, and beds recently affected by cucurbit diseases. A soil test should guide amendments.
Fertilization
Incorporate mature compost before planting. When a soil test indicates need, apply a balanced organic fertilizer at the labelled rate during establishment. After flowering begins, avoid high-nitrogen feeding that favours leaves and stems at the expense of fruit set. A light side-dressing may be used only when plant growth and soil conditions justify it, without touching stems and never on dry soil. Check heat, irrigation, pollination, and pests before adding nutrients. Record amendments so unnecessary doses are not repeated from year to year. Stop late feeding when remaining warm-season time is too short for new fruit to mature.
Seasonal care
In spring, warm soil and harden transplants without disturbing roots. Install floating cover against wind and cucumber beetles, then remove it once female flowers appear so pollinators can enter. In summer, guide vines, mulch, water deeply, and slide a board or tile beneath every fruit. As autumn approaches, remove new fruit that cannot ripen, watch maturity signs, and protect from an early cold spell.
Container growing
A controlled environment.
Recommended pot size
Very large container of at least 75 to 100 L per plant
Container growing is possible only in one very large 75–100 L or larger deep heavy freely drained vessel. Allow one plant per container, use rich mix, and place in full sun against a warm wall. Let vines trail on the ground or use a very strong trellis; support every fruit in an expanding sling without constricting the stem. Check moisture daily during heat, fertilize moderately, and ensure pollinator access once flowering begins.
Bloom and dimensions
The complete profile.
Flower color
Yellow
Foliage color
Green
Foliage type
Compound, divided foliage with an ar when bruised; grown as an annual in Quebec
Growth rate
Vigorous during the warm season
Bloom period
Male followed by female flowers on the same plant
Fruiting
Round fruit 18 to 20 cm and 3.5 to 4.5 kg, generally one to two per plant
Harvest
Begin checking around 76 days after transplanting. Three signs should converge: the tendril nearest the stem browns and dries, the ground spot becomes cream-yellow rather than greenish white, and fruit gives a duller hollow sound when gently tapped. ‘Sugar Baby’ rind also becomes very dark, nearly black. Cut the stem with a knife leaving several centimetres; do not pull. Handle without impact and ideally store at 7–10°C for two to three weeks.
Garden associations
What to plant with it.
Good companions
Basil and early lettuce can occupy nearby space when light, water, air circulation, and root room remain sufficient.
Avoid planting with
Potatoes according to the commercial profile; chiefly avoid competition and close cucurbit rotations
Fresh fruit, snacks, fruit salads, desserts, beverages, and grilling
From the garden to inspiration.
Watermelon cucumber mint salad — Wash the rind before cutting. Cube 600 g sound flesh and remove seeds. Add one sliced cucumber, 30 ml chopped mint, 15 ml lime juice, and a pinch of salt. Toss gently and keep chilled until serving. Refrigerate within two hours and consume promptly. Discard every cracked, fermented, mouldy, or abnormal-smelling fruit.
Frequently asked questions
Everything toknow.
Do not rely on one sign. Wait until the tendril nearest the fruit browns and dries, the ground spot becomes cream-yellow, and the tapped sound grows duller. ‘Sugar Baby’ rind also becomes nearly black-green and loses some shine. Use approximately 76 days after transplanting as a guide, then inspect every fruit. Once cut, watermelon does not continue ripening like a tomato.
Yes, provided available heat is maximized. Start plants only three to four weeks before planting to prevent root binding, use individual pots, and transplant after frost into soil above 21°C. A south-facing mound, black fabric, and floating cover speed establishment. Remove cover at flowering, water regularly, and remove very late fruit that will not have time to mature.
The first flowers are often male and fall naturally after releasing pollen. Female flowers carry a small swelling at their base and must receive enough pollen during their short opening period. Cold, rain, extreme heat, few bees, or insecticide use during bloom may reduce fruit set. Maintain steady moisture, grow pollinator-supporting flowers nearby, and avoid treating while blossoms are open. When bees are scarce, transfer pollen gently from a male flower to a female flower in the morning with a small clean brush. Excessive nitrogen may also produce abundant vine growth with little fruit. Allow several cycles of male and female bloom before concluding that pollination has failed.
Yes, but the support must be extremely strong and every 3.5–4.5 kg fruit must rest in one wide sling attached to the trellis, never to the fruit stem. Guide vines gently without breaking tendrils and provide at least a 75–100 L container if not growing in open ground. Trellising improves airflow but increases wind exposure and drying, so monitor watering daily.
Its strengths, naturally.
Attracts or supports pollinating insects
Pollinators
Plants that attract butterflies
Butterflies
