Rich Sweetness Melon - Care Sheet

Overview

Rich Sweetness Melon, usually sold as ‘Rich Sweetness 132’, is an annual cultivar of Cucumis melo. It produces striking striped fruits about the size of a tennis ball, with pale, juicy flesh and a strong fragrance. Despite its name, sweetness can be mild and depends on growing conditions and ripeness.

Grow it as a summer edible vine in a sunny garden, large container, or greenhouse. Its small fruits suit vertical growing, but the vines still need room. We rate it Intermediate: warmth, consistent watering, and successful pollination are essential, especially in cool climates.

Quick Facts

Light

Choose your sunniest sheltered spot. Six hours of direct sunshine is a minimum, with 8–10 hours preferable for productive growth and ripening. In cooler regions, a bright greenhouse or polytunnel improves the chances of a harvest. Space and train vines so foliage receives light without becoming a dense tangle.

Water

Keep the root zone evenly moist, particularly during establishment, flowering, and fruit expansion. In garden beds, about 25 mm / 1 in of water weekly, including rainfall, is a starting point. Water deeply rather than giving frequent shallow splashes.

Check containers daily in hot weather and water when the surface begins to dry, allowing excess to drain. Direct water onto the soil in the morning. Ease watering as fruit ripens, but avoid severe drying or sudden soaking, which can impair fruit quality.

Humidity

Melons appreciate humidity, but stagnant, damp air encourages disease. There is no established humidity percentage specifically for this cultivar, so focus on healthy growth and airflow rather than a fixed target. Ventilate greenhouses regularly. Avoid routine leaf misting; adequate root moisture is more useful than persistently wet foliage.

Temperature

A practical warm-season growing range is 21–32°C / 70–90°F, with around 25°C / 77°F particularly suitable. Wait until frost risk has passed and nights reliably remain above 12–15°C / 54–59°F before planting outside. For direct sowing, aim for soil above 21°C / 70°F. Ventilate protected growing spaces during hot spells to prevent overheating.

Soil & Potting

Use fertile, freely draining soil enriched with well-rotted compost. A soil pH around 6.2–6.8 is a useful target; test before adding lime. Raised beds help where drainage is poor.

For containers, choose one plant per pot, ideally at least 40 cm / 16 in wide and deep, with drainage holes and quality peat-free potting compost. Install a sturdy trellis at planting. Support hanging fruit with breathable slings if stems strain, and keep trailing fruits off wet soil.

Feeding

Base garden-bed fertilizer applications on a soil test; well-prepared fertile ground may need little additional feeding. Water fertilizer into the soil and keep concentrated products away from stems.

For pots, use a general liquid fertilizer every 10–14 days during active early growth, following its label. Switch to a higher-potassium tomato-type feed when fruits reach walnut size. Stop feeding as the crop finishes ripening and foliage declines.

Repotting

This annual does not need routine repotting every year. Raise seedlings in individual small pots, then transfer them into their final container or bed while young. Keep the root ball intact and plant at its original depth. Avoid repeatedly moving established vines, which can damage roots and interrupt growth.

Propagation

Sow seed about 1.3–1.9 cm / ½–¾ in deep. In short-season climates, start indoors approximately three to four weeks before intended planting. Keep seedlings warm and bright, then gradually acclimatize them outdoors before transplanting.

Saved seed can cross with other Cucumis melo varieties. To preserve this cultivar, isolate compatible varieties or bag flowers and hand-pollinate. Collect seed from fully mature fruit, clean it, dry thoroughly, and store somewhere cool and dry.

Common Problems

Flowers but few fruits

Early male flowers cannot form fruit. Later, poor pollination may limit the crop. Give bees access by opening greenhouse vents and removing flower-season covers. If necessary, transfer pollen from a male flower to the stigma of a flower with a tiny fruit behind it.

White powder on leaves

Powdery mildew produces pale powdery patches. Improve spacing and airflow, remove badly affected leaves, and monitor remaining foliage. If treatment is needed, choose a product labeled for edible melons and observe harvest restrictions.

Curled, sticky leaves

Check leaf undersides for aphids. Preserve beneficial insects and dislodge small colonies with water. For persistent infestations, use an insecticidal soap labeled for edible crops, following directions and avoiding flowers visited by bees.

Slow growth or wilting

Check soil moisture and temperature first. Cold, wet roots can stall growth, while dry containers cause wilting. Improve drainage, provide warmth, and water according to actual moisture rather than automatically soaking a wilted plant.

Toxicity & Pet Safety

The ASPCA lists Cucumis melo as non-toxic to cats, dogs, and horses. This supports a species-level pet-safe assessment, although this cultivar is not separately listed. Safety for birds, reptiles, and other pet groups is not established here. Discourage chewing vines or swallowing rind, and keep fertilizers and crop treatments inaccessible.

Seasonal Care

Start in spring once you can provide warmth. During summer, train vines, maintain moisture, and monitor pollination and pests. Harvest when fruits develop rich color and fragrance and begin separating easily from the stem. Use maturity estimates as guidance, since cool weather delays ripening. Remove spent annual vines after the final harvest.

Quick Tips

• Choose full sun and shelter from cold winds.
• Plant out only after frost risk passes.
• Install supports before vines spread.
• Water roots consistently and keep leaves dry.
• Allow pollinators access during flowering.
• Judge harvest readiness by fragrance, color, and stem release.