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50 Black Diamond Watermelon Seeds by RDR Seeds

4.2 out of 5 stars 90 ratings
Amazon's Choice recommends highly rated and well-priced products.
Amazon's Choice for "black diamond watermelon seeds"

Price: $5.99 FREE Shipping on your first order. Details & FREE Returns
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  • Quintessential, King, Favorite, whatever you want to call it, this watermelon is popular for a reason!
  • This delicious watermelon averages 30-50 lbs, but sometimes gets as big as 75 lbs! Plants grow 12-18" tall.
  • In areas with shorter growing seasons it is best to start watermelon seeds indoors to get a head start. Plant 3 seeds per pot about 1/4" deep and provide heat to about 80 degrees to increase germination.
  • Ensure soil does not dry out due to heat. Seeds should germinate in 1-2 weeks. After seeds have germinated thin to one per pot. Make sure to acclimate plants to the outdoors for several days prior to transplanting to harden them off.
  • To sow directly in garden plant 5 seeds per hill 1' apart with 4' between rows. Requires healthy amounts of water and warm temperatures. Black plastic on soil can aid in warming soil.

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50 Black Diamond Watermelon Seeds by RDR Seeds
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Customer Rating 4.2 out of 5 stars (90) 3.6 out of 5 stars (111) 3.8 out of 5 stars (48) 3.8 out of 5 stars (92)
Price $5.99 $6.99 $4.99 $5.99
Shipping FREE Shipping on your first order. Details FREE Shipping on your first order. Details FREE Shipping on your first order. Details FREE Shipping on your first order. Details
Sold By RDR Seeds Isla's Garden Seeds Hometown Seeds Isla's garden seeds
USDA Hardiness Zone 3 3,4,5,6,7,8,9,10,11,12 1-11 3,4,5,6,7,8,9,10

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All RDR Seeds brand products come in RDR Seeds branded packaging that includes plant information and planting instructions.


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4.2 out of 5 stars
4.2 out of 5
90 customer ratings
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Reviewed in the United States on September 21, 2017
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Reviewed in the United States on July 15, 2019
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Reviewed in the United States on April 10, 2019
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