United States Edition

Watermelon 'Black Diamond'

Citrullus lanatus

Black Diamond is part of the Citrullus genus and is a Watermelon variety. Its scientific name is Citrullus lanatus 'Black Diamond'. Black Diamond is a heirloom (open pollinated) variety. Black Diamond grows as an Annual and is a Fruit. Being an Annual, it tends to grow best over the course of a single year. Black Diamond normally grows to a max height of 1.46 feet (45.0 cm metric). This variety tends to bloom in late spring.

Black Diamond Watermelon needs a moderate amount of maintenance, so some level of previous experience comes in handy when growing this plant. Ensure that you are aware of the soil, sun, ph and water requirements for this plant and keep an eye out for pests.

This plant info is provided by the myfolia gardener's wiki. All details about Watermelon 'Black Diamond' have been kindly provided by our members.

How to grow Watermelon 'Black Diamond'

  • Full Sun

Average Water Needs; Water regularly; do not overwater.

Keep in mind when planting that Black Diamond is thought of as tender, so it is really important to ensure that the outside temperature is well above freezing before planting or moving outdoors. Use USDA Hardiness Zone 4 - 9 as your guideline for the appropriate climate for this plant. Black Diamond tends to grow best in a soil ph of between 6.5 and 7.5 meaning it does best in weakly acidic soil - weakly alkaline soil.

Growing Black Diamond from seed

Look to ensure a distance 8.12 feet (2.50 metres) between seeds when sowing - bury at a depth of at least 0.39 inches (1.0 cm) deep. Soil temperature should be kept higher than 16°C / 61°F to ensure good germination.

Transplanting Black Diamond

From seed; direct sow after last frost OR start inside 3-4 weeks before last frost.

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Black Diamond is a tender plant.

Harvesting Black Diamond

This variety tends to be ready for harvesting by late summer.

Watermelon 'Black Diamond' information

How long does Black Diamond take to grow?

These estimates for how long Watermelon 'Black Diamond' takes to sprout, grow and harvest are from real observations from real gardeners, right around the world. Start logging and journaling your observations to participate!

Other Names for Watermelon 'Black Diamond'

watermelon

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