How to Grow Jubilee Watermelon | Guide to Growing Jubilee Watermelon

 
How to Grow Jubilee Watermelon | Guide to Growing Jubilee Watermelon  

Overview

 
 

Seed Starting Guide

Seed Starting A-Z

Calendar

Transplanting

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Growing Vegetables

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Seed Saving

 

Organic Vegetable Gardening

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Jubilee watermelons are crisp and flavorful, and often require around 90 days to reach maturity. The melons are oblong, with alternating dark green and pale green stripes. Jubilees can often weigh roughly 40 lbs at the end of their growth cycle.

 
   
 

Seeds or Seedlings

3 to 5 days, 60F to 95F

4 years

High Fertility

Full Sun

12" apart

4' to 6' apart

65 to 86

Growing Guide
GROWING NOTES

Indoor Starting
As they require a long growing season, watermelons are best started indoors approximately 3-4 weeks prior to the last frost of the season. Sow seeds 1/4" deep in flats or small pots, sowing 3 seeds per pot. Keep medium moist while awaiting germination. Additionally, watermelon seeds will show better germination rates with heat. Keep the soil between 80-90 degrees, using a heat mat if necessary. Seed should begin to germinate within 3-10 days.

 

Once seeds start to germinate, lower soil temp slightly to the mid 70s, for 1-2 weeks, also decreasing water. Thin to one plant per cell or pot. Once the first set of true leaves has developed, reduce waterings once more, but do not allow plant to become desiccated.

 

Harden plant by gradually exposing to outdoor conditions. Transplant to permanent site in late spring after the last frost has passed. If possible, transplant on an overcast day to minimize wilting and create a more amenable environment for your young plant.

 

Outdoor Starting
If you have long, hot growing seasons, melons can direct-seed into garden. To ensure ripening in areas with shorter growing seasons and cooler weather, choose fast-maturing varieties, start plants inside, use black or IRT plastic mulch to warm soil and use fabric row covers to protect plants.

 

Direct-seed 1 to 2 weeks after average last frost when soil is 70 F or warmer. Plant 1 inch deep, 6 seeds per hill, hills 4 to 6 feet apart; or 1 foot apart in rows 5 feet apart. Can plant at closer spacings if trellised. Thin to 2 to 3 plants per hill.

 

Choosing a Site
Prefers warm, well-drained, soil, high in organic matter with pH 6.5 to 7.5. Consistent, plentiful moisture needed until fruit is about the size of a tennis ball. Soil temperatures below 50 F slow growth. Consider using black plastic and fabric row covers to speed soil warming. Sandy or light-textured soils that warm quickly in spring are best.

 

In many areas, successful crops require starting plants indoors, using plastic mulch to warm soil, and fabric row covers to protect young transplants.


MAINTAINING

For transplanting, sow seeds indoors ¼ inch deep in peat pots (2-inch square or bigger), 2 to 4 weeks before setting out. Plants should have one or two true leaves when transplanted.

 

Transplant at same spacings as direct-seeded crops - 2 to 3 plants per hill in hills spaced 4 to 6 feet apart, or 1 to 2 feet apart in rows 5 feet apart. Transplants are delicate and roots are sensitive to disturbance. If you need to thin, use scissors. Keep soil intact around plant when transplanting.

 

Mulch plants after soil has warmed to help maintain consistent moisture and suppress weeds.

 

If using fabric row covers, remove at flowering to allow pollination by bees. Good pollination is critical to fruit set.

 

Plants require consistent moisture until pollination. Once fruits are about the size of a tennis ball, only water if soil is dry and leaves show signs of wilting.

 

To prevent insect damage to developing fruits, place melons on pots or pieces of wood.

 

If growing melons on a trellis, support fruit with slings made from netting, fabric, or pantyhose. Trellising improves air circulation around plants and can help reduce foliar disease problems. Choose small-fruited varieties and reduce plant spacing.

 

For large plantings, leave a strip of rye cover crop every second or third row perpendicular to prevailing winds to protect plants from damaging wind.

 

To reduce insect and disease problems, avoid planting cucumber family crops (melons, squash, pumpkins) in the same spot two years in a row.

 

Do not let your melon plants get dried out during the growing season. They are not tolerant of drought. Additionally, be cautious not to over-water plants as this can negatively impact the taste and flavor later on. Keep soil moist but not soggy.

 
   
     
   
 

Harvesting Guide

HARVESTING

Harveting watermelons is not as straight forward as many other vegetables when it comes to deciding exactly when to harvest. One of the reasons is that they do not slip off the vine like cantaloupes when ripe. This makes it is necessary to look for other indicators. Rolling the melon over and looking at the ground spot where the melon was laying is probably the best method. If that portion of the watermelon is a pale yellow color, the melon should be ripe. You can also look at the tendrils (short, curly, stem-like vine) next to the melon. The tendrils are close to the area where a leaf is attached to the main vine. When the first tendril next to the fruit looks dead and dried up, the melon closest to that tendril should be ripe. Watermelons will store longer than other melons and should be refrigerated, especially after cut.


SAVING SEEDS

Scoop out the seeds from a ripe melon and put them into a wire mesh sieve, then with running water over the seeds rub them gently against the mesh, using it to loosen and remove the stringy fibers. Next place the cleaned seeds in a bowl of water, stir it a few times. Some seeds will float to the top....these are immature or sterile melon seeds, they are hollow and/or light-weight and will float to the top of the water. Skim away these bad seeds and discard them. Stir a few more times and repeat the process until no more sterile seeds float to the the top. Drain the water from the remaining seeds.

 

Afterwards, line a heavy plate or baking pan with waxed paper, spread the seeds out in a single layer onto the waxed paper and place it in sunny spot to air-dry.

 

Stir the seeds occasionally during the next few hours to make sure all sides are exposed to fresh air, this facilitates even drying. After a day in the sun bring the seeds into the house where they continue to dry for another week or two, stir them daily so they dry evenly. If you've got rainy weather the increased humidity can prolong the drying process another week or so.

 

Melons have thick seeds so be sure they are thoroughly dry before packing them for storage.


 
     
 

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