Non-GMO Open-Pollinated Rare Cosmic Jewell Tomato Seeds

We are proud to support and showcase plant breeding at its best by presenting the Cosmic Jewel - a show stopper of a tomato!  Cosmic Jewel originally emerged from an unexpected cross involving one of the unique “centriflor” tomatoes that Wild Mountain Seed originally obtained from Alan Kapular’s Peace Seeds.

Wild Mountain Seed began working to develop richly pigmented, anthocyanin-rich lines and crack resistance, resulting in eye-catching, dark grape tomato that lives up to its name in both appearance and performance. The vines yield an ongoing display of fruit-laden hypertresses all season long. The flavor is delicious, the fruit holds exceptionally well off the vine.

Seed Profile

• Open-Pollinated 

• Non-GMO

• Annual

• Sun: Full

• Indoors: 6-8 weeks before last frost

• Direct Sow: No 

• Seed Count: 25

• Days to Maturity: 64-70 from transplant date

• Plant Size: 4'-8' vine

Gardener Tips

Seeds should be planted indoors and kept in a dome with a heated mat for 6-8 weeks. 

It is key that your new starts be hardened off.  This is a process that requires taking them outside during the day, for a period of time, before they are planted. This acclimates your seedlings to the outside world, meaning the elements like the wind and sun. We do it for several weeks to a month as this strengthens their stems and overall plant structure. 

• Start for a short period of time initially, then graduate to more time each day

• One week minimum is recommended

• Bring them inside in the early evening and overnight

• Keep an eye on them and constantly water them. Make sure they have not blown over. 

Mulch at base of plant.  Read our blog post on The Power of Mulching

Use trellis or cage for support. 

Water only base of plant.

Harvesting Tips

Harvest when fruit is fully mature and has mottled colors.

Use clean sharp shears to remove fruit from the plant.  

Consistent harvesting and removal of decayed fruit will promote more flowers and more fruit-set.