RDR Seeds
0 ratings
50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs
genuine image
50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs
This watermelon averages 30-50 lbs, but sometimes gets as big as 75 lbs! Plants grow 12-18" tall.
50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs

50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs

0 ratings Write a review
Out of stock
us Imported from USA store
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
This watermelon averages 30-50 lbs, but sometimes gets as big as 75 lbs! Plants grow 12-18" tall.
Search for similar products
U-Care Warranty:
None
Select a Plan
fast shipping

Fast
Shipping

free return

Free
Return*

secure packaging

Secure Packaging

100% original products

100% Original Products

pci-dss

PCI DSS Compliance

iso certified

ISO 27001 Certified

paypal payment
visa payment
mastercard payment
mobile money payment
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

Heirloom Quality
These watermelon seeds are heirloom varieties, ensuring superior taste and adaptability, allowing gardeners to enjoy authentic flavors and reliable growth patterns for generations.
Non-GMO Assurance
Being non-GMO, these seeds provide peace of mind for health-conscious gardeners, promoting sustainable growing practices without the risks associated with genetically modified organisms.
Impressive Size
With a potential weight range of 30-50 lbs, these giant watermelons not only offer a rewarding harvest but also make a striking centerpiece for summer gatherings and family events.

Product Details

Shop for 50 Black Diamond Watermelon Seeds - High yield, heirloom, non-GMO fruit seeds. Grow giant watermelons averaging 30-50 lbs. Order now from Ubuy Kenya!
  • 50 Black Diamond Watermelon Seeds for Planting
  • Heirloom Non-GMO Fruit Seeds for Planting
  • Grows big giant watermelons averaging 30-50 lbs
  • Plants grow 12-18 tall
  • Start watermelon seeds indoors for shorter growing seasons
  • Sow directly in garden, plant 5 seeds per hill with healthy amounts of water and warm temperatures
Package Weight1.0000 Pound

Who Should Buy?

Suitable For
  • Home Gardeners

    Ideal for those wanting to grow large, flavorful watermelons in their backyard gardens for personal consumption.

  • Organic Farmers

    Perfect for farmers focused on heirloom and non-GMO crops looking to enhance their fruit offerings.

  • Families with Kids

    Excellent for families wanting to engage children in gardening activities and experience growing their own food.

Not Suitable For
  • Small Garden Spaces

    Not suitable for those with limited space, as watermelons require ample room to grow effectively.

Product Description

50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs

Dietary Supplement Disclaimer

Statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition.


Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are Black Diamond Watermelon seeds?

    Answer: Black Diamond Watermelon seeds are heirloom, non-GMO seeds known for producing large, sugary watermelons averaging between 30 to 50 lbs. These seeds are cherished by gardeners for their superb taste and ideal for those seeking to grow watermelons in their own gardens. The Black Diamond variety is notable for its dark green rinds and sweet, red flesh, making it a gourmet choice for summer gatherings and barbecues.
  • Question: How do I plant Black Diamond Watermelon seeds?

    Answer: To plant Black Diamond Watermelon seeds, start by preparing a warm, sunny spot in your garden with well-drained soil. Sow the seeds about 1 inch deep and 3-4 feet apart, ensuring that the soil temperature is around 70°F for optimal germination. Water the seeds regularly but be cautious of overwatering. Larger garden spaces will give the watermelons room to sprawl, which is key for their growth.
  • Question: What is the best time to plant Black Diamond Watermelon seeds?

    Answer: The best time to plant Black Diamond Watermelon seeds is in late spring or early summer when the soil has warmed up sufficiently. Watermelons thrive in warm weather, so ensure that the danger of frost has passed, as these seeds will not germinate in cold soil. This timing aligns with the typical growing season, allowing your watermelons to grow and achieve their maximum size and sweetness.
  • Question: How long does it take for Black Diamond Watermelons to grow?

    Answer: From planting to harvest, Black Diamond Watermelons typically take about 80 to 90 days to mature. During this time, it’s essential to provide consistent care, including regular watering and fertilization. This timeframe allows the plants to develop their roots and build up energy, ultimately producing those large, delicious watermelons that can weigh between 30 to 50 lbs, perfect for summer feasts.
  • Question: What conditions are ideal for growing Black Diamond Watermelons?

    Answer: Black Diamond Watermelons flourish in warm, sunny conditions with direct sunlight for at least 6 to 8 hours a day. They prefer well-draining soil with a pH level between 6.0 and 6.8. Ample space and good air circulation are crucial, as this variety can spread extensively. These conditions will support robust plant growth, leading to a bountiful harvest rich in sweetness and flavor.
  • Question: Are Black Diamond Watermelons resistant to diseases?

    Answer: While no plant is entirely disease-resistant, Black Diamond Watermelons exhibit some resilience against common watermelon diseases such as powdery mildew and fusarium wilt. To further enhance their health, practice crop rotation and avoid overcrowding plants to reduce disease risk. This proactive care approach ensures that your watermelons have a healthier growing environment, resulting in better quality fruit.
  • Question: Can Black Diamond Watermelons be grown in containers?

    Answer: Yes, Black Diamond Watermelons can be grown in large containers, though they require sufficient space and nutrients. Choose a pot that is at least 5 gallons in size and ensure it's deep enough to accommodate the extensive root system. Select a high-quality potting mix and provide the plants with adequate support as they grow. This method is excellent for gardeners with limited space, allowing them to enjoy fresh watermelons.
  • Question: How do I know when my Black Diamond Watermelons are ready to harvest?

    Answer: To determine when your Black Diamond Watermelons are ripe for harvesting, look for a uniform dark green color, a dull sheen on the skin, and a yellow spot where the watermelon rests on the ground. Additionally, you may notice the tendril nearest to the fruit turning brown. Harvesting at the right time guarantees the best sweetness and texture for enjoying fresh or in summer recipes.
  • Question: What are the nutritional benefits of Black Diamond Watermelons?

    Answer: Black Diamond Watermelons are not only delicious but also packed with nutritional benefits. They are low in calories, rich in vitamins A and C, and hydrate effectively due to their high water content. Consuming these watermelons can help promote healthy skin, improve hydration, and provide a refreshing treat packed with antioxidants, making them a great addition to a healthy diet.
  • Question: Where can I buy 50 Black Diamond Watermelon Seeds for Planting?

    Answer: You can buy 50 Black Diamond Watermelon Seeds for Planting at Ubuy in Kenya. Ubuy offers a variety of gardening products, including heirloom non-GMO seeds, ensuring you get quality that supports healthy growth. Whether you are a seasoned gardener or a beginner, Ubuy provides an accessible platform for procuring these sought-after seeds, helping you start your gardening journey with confidence.

RDR Seeds Fruits Editorial Review

No editorial reviews found

Customer Reviews & Ratings

5.0
1 customers ratings
  • 5 Star
    100%
  • 4 Star
    0%
  • 3 Star
    0%
  • 2 Star
    0%
  • 1 Star
    0%

Review this product

Share your thoughts with other customers

Platform Trust & Buyer Confidence

trustpilot logo
4.3/5 9200 + reviews
Read reviews
MA
Mohammad
Verified buyer

“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer

“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

22-Jul-26 · via Trustpilot
K
kund
Verified buyer

“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer

“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer

“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”

23 July 2026 · via Trustpilot
Secure Checkout Global Delivery Easy Returns Genuine Products

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

Currently unavailable.

We don't know when or if this item will be back in stock.

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • - RDR Seeds branded packaging includes planting instructions
  • - Popular watermelon that can grow up to 75 lbs
  • - Plants grow 12-18" tall
  • - Start seeds indoors in areas with shorter growing seasons
  • - Direct sow 5 seeds per hill 1' apart with 4' between rows
  • - Requires abundant water and warm temperatures

Ubuy Assurance

Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.