---
product_id: 72485943
title: "50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs"
brand: "rdr seeds"
price: "€ 10.87"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/72485943-50-black-diamond-watermelon-seeds-for-planting-heirloom-non-gmo
store_origin: SK
region: Slovakia
---

# 50 seeds Regular watering Full sun exposure 50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs

**Brand:** rdr seeds
**Price:** € 10.87
**Availability:** ✅ In Stock

## Summary

> 🍉 Cultivate Your Summer with the King of Fruits!

## Quick Answers

- **What is this?** 50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs by rdr seeds
- **How much does it cost?** € 10.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/72485943-50-black-diamond-watermelon-seeds-for-planting-heirloom-non-gmo)

## Best For

- rdr seeds enthusiasts

## Why This Product

- Trusted rdr seeds brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pet Friendly:** Grow your garden worry-free; these seeds are safe for your furry friends!
- • **Easy Germination:** Seeds germinate in just 1-2 weeks with the right warmth and care.
- • **Heirloom Quality:** Enjoy the rich taste of non-GMO heirloom seeds, perfect for the eco-conscious gardener.
- • **Giant Watermelons Await!:** Grow watermelons averaging 30-50 lbs, with some reaching up to 75 lbs!
- • **Indoor/Outdoor Versatility:** Start indoors or sow directly in your garden for flexible planting options.

## Overview

These 50 Black Diamond Watermelon Seeds are heirloom, non-GMO seeds designed for planting in warm weather. Expect giant watermelons averaging 30-50 lbs, with the potential for even larger fruits. Ideal for both indoor and outdoor gardening, these seeds require regular watering and full sun exposure to thrive.

## Description

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

## Features

- 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Expected Planting Period | Spring/Summer - Warm Weather |
| USDA Hardiness Zone | 3 |
| Moisture Needs | Regular Watering |
| Expected Plant Height | 16 Inches |
| Sunlight Exposure | Full Sun |
| Indoor Outdoor Usage | Indoor |
| Additional Features | Pet Friendly |
| Unit Count | 1 Count |
| Number of Pieces | 50 |
| Item Weight | 0.01 Pounds |
| Product Care Instructions | Water |
| Material Features | GMO Free, Heirloom |
| Color | Brown |

## Product Details

- **Plant or Animal Product Type:** Fruit
- **Indoor/Outdoor Usage:** Indoor
- **Brand:** RDR Seeds
- **Material Feature:** GMO Free, Heirloom
- **Color:** Brown
- **Special Feature:** Pet Friendly
- **Item Weight:** 4.54 g
- **Sunlight Exposure:** Full Sun
- **Unit Count:** 1 Count
- **Expected Planting Period:** Spring/Summer - Warm Weather

## Images

![50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs - Image 1](https://m.media-amazon.com/images/I/813KEaPC1+L.jpg)
![50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs - Image 2](https://m.media-amazon.com/images/I/71yJHZbgv7L.jpg)
![50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs - Image 3](https://m.media-amazon.com/images/I/71XkNPb5lrL.jpg)
![50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs - Image 4](https://m.media-amazon.com/images/I/71W2ToKowOL.jpg)
![50 Black Diamond Watermelon Seeds for Planting - Heirloom Non-GMO Fruit Seeds for Planting - Grows Big Giant Watermelons Averaging 30-50 lbs - Image 5](https://m.media-amazon.com/images/I/71F20xishRL.jpg)

## Questions & Answers

**Q: can they grow in las vegas nv**
A: I grow them in Texas, should be zoned similarly

**Q: Are they organic?**
A: Yes they are. They are fairly small but worth every bite. I am now using second harvest seeds and they are amazing.

**Q: I didn’t get mine. Supposedly they were delivered, but were not in mailbox. Did everyone else get theirs?**
A: I recieved mine with no issues.

**Q: If I buy these in august, will they be safe to keep in the refrigerator until next may?**
A: I kept mine in a baggie on a shelf and they did fine.

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**Shop now:** [https://www.desertcart.sk/products/72485943-50-black-diamond-watermelon-seeds-for-planting-heirloom-non-gmo](https://www.desertcart.sk/products/72485943-50-black-diamond-watermelon-seeds-for-planting-heirloom-non-gmo)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-11*