📌 Quick Summary (TL;DR): Kas 15 (Kalman x Albenga)
- 🌍 Origin: Modern cross from the renowned Polish breeder, Katarzyna (known online as Kasencja). It is a cross between the famous Kalman and Albenga varieties.
- 🌿 Plant Habit: Indeterminate (tall). Known for being incredibly resilient and disease-resistant. It sets fruit perfectly in both extreme heat and cold without dropping blossoms.
- 🍅 Fruit Characteristics: Uniform, round-to-slightly-ribbed meaty red tomatoes. They typically weigh in the 7-9 oz (200-250 g) range. A standout feature is that the fruits on the very top of the plant do not shrink in size compared to the bottom trusses.
- ⏳ Production: Extremely heavy yielder. It tends to ripen uniformly in large flushes (waves), making it excellent for processing or market growers.
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Kas 15 (Kalman x Albenga)
Unbelievably heavy yielder. It sets every single blossom all the way to the very top of the plant, regardless of the weather. Zero disease issues. Just a solid wall of uniform, round, meaty tomatoes weighing around 7-9 oz (200-250 g). The fruits on the upper trusses don’t get any smaller either. Ripens uniformly in big flushes.
This is a newer release from Kasencja’s breeding lines.
I’m seeing conflicting info about this variety from different sources. I swore I saw a version with anthocyanin somewhere. It’s on my grow list for next year, but I really want to figure this out. Does the true one have antho shading or not?
👨🌾 Editor’s Note: The Anthocyanin Mix-up
To answer Svetlana’s question: No, the true Kas 15 does not have anthocyanin (purple/black shoulders). It is a cross between Kalman and Albenga, which are both classic red/pink heirlooms without antho genes. If someone is selling or showing a “Kas” tomato with purple shoulders, they are likely confusing it with Kas 21 (a cross between P20 and Bawole Serce), which is another incredibly famous release from the same Polish breeder, Kasencja. Kas 21 is a stunning purple-shouldered heart, while Kas 15 is a solid red/pink workhorse!
To answer Svetlana’s question: No, the true Kas 15 does not have anthocyanin (purple/black shoulders). It is a cross between Kalman and Albenga, which are both classic red/pink heirlooms without antho genes. If someone is selling or showing a “Kas” tomato with purple shoulders, they are likely confusing it with Kas 21 (a cross between P20 and Bawole Serce), which is another incredibly famous release from the same Polish breeder, Kasencja. Kas 21 is a stunning purple-shouldered heart, while Kas 15 is a solid red/pink workhorse!
