Watermelon Seeds - Black Diamond | Vegetable Seeds in Packets & Bulk | Eden Brothers

Watermelon Seeds - Black Diamond

Size
Price
Savings
Quantity
Packet
$4.25
-
+
1 Ounce
$9.50
-
+
1/4 Pound
$21.95
42%
-
+
1 Pound
$52.95
65%
-
+
5 Pounds
$164.95
($32.99/lb.)
78%
-
+
CHOOSE A SIZE
  • Packet

    $4.25
  • 1 Ounce

    $9.50
  • 1/4 Pound

    $21.95
    42% Savings
  • 1 Pound

    $52.95
    65% Savings
  • 5 Pounds

    $164.95
    ($32.99/lb.)
    78% Savings
-+
  • Striated Green Rind and Juicy, Flavorful Red Flesh
  • Abundant Producer; Tough Skin with Large Leaves That Help to Prevent Sunburn
  • Prefers Full Sun Exposure and Warm Weather

Fast Facts

Life Cycle:Annual
Light Requirement:Full Sun
Planting Season:Warm Season
Fruit Size:50+ lbs
Days to Maturity:60-90 Days
Plant Spacing:36-48 inches
Planting Depth:1 inch
Sowing Method:Start Indoors, Direct Sow
Water Needs:High
Cold Stratification:No
Seeds per Packet:3 g
Hardiness Zones:3, 4, 5, 6, 7, 8, 9, 10
Ships:Year Round
Plant Type:Long vine
Features:Heirloom

About Watermelon Seeds - Black Diamond

HEIRLOOM - OPEN POLLINATED

Buy Watermelon Seeds in Bulk & Save

Heirloom Black Diamond Watermelon Seeds:

Black Diamond is one of the truly great watermelon varieties for both home gardeners and market growers. The rind of the fruit is a striated green, and the flesh is a delicious red. Black diamond routinely produces watermelons in the 50 pound range, but some can grow as large as 75 pounds! We highly recommend Black Diamond to rookie and veteran gardeners alike.

Fast Facts

Life Cycle:Annual
Light Requirement:Full Sun
Planting Season:Warm Season
Fruit Size:50+ lbs
Days to Maturity:60-90 Days
Plant Spacing:36-48 inches
Planting Depth:1 inch
Sowing Method:Start Indoors, Direct Sow
Water Needs:High
Cold Stratification:No
Seeds per Packet:3 g
Hardiness Zones:3, 4, 5, 6, 7, 8, 9, 10
Ships:Year Round
Plant Type:Long vine
Features:Heirloom

About Watermelon Seeds - Black Diamond

HEIRLOOM - OPEN POLLINATED

Buy Watermelon Seeds in Bulk & Save

Heirloom Black Diamond Watermelon Seeds:

Black Diamond is one of the truly great watermelon varieties for both home gardeners and market growers. The rind of the fruit is a striated green, and the flesh is a delicious red. Black diamond routinely produces watermelons in the 50 pound range, but some can grow as large as 75 pounds! We highly recommend Black Diamond to rookie and veteran gardeners alike.

How to Grow Black Diamond Watermelon

When to Plant Watermelon Seeds

If you live in a climate with a short growing season, consider starting your watermelon seeds indoors 4 to 6 weeks before transplanting seedlings into the garden. Sow watermelon seed directly, or set out your transplants 3 to 4 weeks after the last average frost date in spring. Watermelon demands warm temperatures – both soil and air. Transplant or direct sow watermelon seeds only when the average soil and daytime air temps are at least 70F.

Where to Plant Watermelon Seeds

Watermelons are heavy feeders and need soil rich in nutrients. They grow best in loose, well-drained, but moisture-retentive soil rich in organic matter. Amend your soil with aged manure, seaweed, and/or compost before planting.

How to Plant Watermelon Seeds

Dig a hole 12" deep and 24" wide, fill with compost, manure, and several handfuls of sand. Use the soil that was removed from the hole to create the mound and then sow your seed or transplant there. Sow watermelon seeds 1" deep, planting 4-6 seeds (or transplanting 2-3 of your strongest seedlings) in mounds that stretch 24" across, If direct sowing, wait until seedlings have developed 3-4 true leaves and choose your strongest 2-3 plants by cutting the thinned out seedlings at soil level with scissors. Build mounds 5-10' apart.

How to Harvest Watermelon

Stop watering your watermelons about 10-14 days before the fruits are ready to harvest, this will concentrate the plant’s sugars and your watermelon will be sweeter. You may want to place a board under each melon to keep the fruit clean and dry. Watermelons will be ready to harvest after 70-90 days from sowing.

Other tips (if any): Companion plants are corn, radish, beans, nasturtiums, marigolds and oregano. Bad companions are potatoes as they attract many of the same insects that feed on watermelon plants.

Avoid growing watermelon where night temperatures dip below 50 F; this will cause fruit to lose flavor. If temperatures exceed 90F for several days, flowers will drop without setting fruit. Watermelons require 70-90 frost-free days to reach harvest and will tolerate no frost. A soaker hose or drip irrigation is the best way to water. If you live in an area where the weather and soil are dry, try planting your watermelon in inverted hills rather than mounds. Regular, even watering will help fruits avoid blossom-end rot which is caused by fluctuation of soil moisture.

Download Printable Planting Guide

Companion Plants for Watermelon Seeds - Black Diamond

Improved Plant or Soil Health

From Our Customers

5.00/5 Based on 2 Reviews

  1. Amazing

    The watermelon was truly amazing. The largest one was 54 lbs and the others weren't that much smaller. The flavor was wonderful. This is the melon to cut when you have plenty over to eat. The Black Diamond will always be welcome in my garden!

  2. Watermelon seeds

    Planted and growing like crazy vines all over lots of blooms hoping for lots of melons also

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