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LYCOPERSICON esculentum 'Kolb'
Beefsteak Tomato, Kolb Tomato, Tomato
The heirloom variety 'Kolb' produces large, rose-pink, "beefsteak" tomatoes on indeterminate vines. Harvest of the flavorful, 1-pound (.45kg) fruits begins about 85 days after seedlings are planted out. This open pollinated cultivar grows true to type from saved seed. It reportedly originated at Kolb Greenhouse in Storm Lake, Iowa, in the mid-twentieth century.
Tomatoes are short-lived tender perennials that are usually grown as annuals. Their medium- to dark-green, hairy, compound leaves have a strong fragrance and are not to be eaten. Mature plants produce distinctive yellow flowers, which are bee pollinated. These are followed by succulent tomato fruits, which are technically berries.
Tomatoes require full sun and fertile, well-drained, slightly acidic to neutral soil. Seeds germinate poorly in cool soil, so plants are best started indoors several weeks before the last frost date. Harden off seedlings before transplanting them to the garden. Set them deeply in the ground for best establishment; the main stem will form roots beneath the soil’s surface. Indeterminate, vining types such as 'Kolb' should be staked, trellised or grown in tomato cages to contain their rambling stems.
Tomatoes are heavy feeders, so it is important to provide them with regular water and nutrients. Be sure to choose a fertilizer specifically formulated for tomatoes. Overwatering can result in cracking of fruit and diminished flavor. Best production and flavor occurs when both days and nights are warm. Tomato fruits become tough and less flavorful when subjected to cooler temperatures, and should not be stored in the refrigerator for this reason. In warm, frost-free regions they may be grown as a winter crop.
For more detailed information about tomato pests and diseases, refer to the general entry for the species (Lycopersicon esculentum) in the Learn2Grow.com plant database.
12 - 1
11 - 15
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
4'-8' / 1.2m - 2.4m
2'-4' / 0.6m - 1.2m
Mexico, Central America, South America
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Green, Dark Green
Container, Edible, Herb / Vegetable, Vine
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