What are some different tomato cultivars

Low-acid tomatoes. Tomato cultivars differ little in acid content. Acid content increases to the green-ripe stage—while sugar increases until the fruit is fully ripe. However, pink, yellow and white cultivars do tend to have a slightly greater proportion of sugar to acid compared with red cultivars.

All tomatoes contain less sugar during cool, wet seasons. Sugar content is also lower in late fall when the weather is cooler and plants have lost some of their leaves because of leaf diseases.

Cultivars for containers. You can grow some tomato cultivars in containers—such as Chello, Gold Nugget, Patio, Pixie, Small Fry, Springset and

Tiny Tim. 'Small Fry,' 'Spring Giant' and 'Springset' need support up to about 2 feet.

Cultivars for tomato paste. Tomato fruits with high solids and mild flavor—such as those from 'Roma' and 'Viva Italia'—are often used for making paste, ketchup and sauce.

Tree tomato. The plant currently sold as a tree tomato (Cyphomandra crassifolia) is a member of the nightshade family. The regular tomato also belongs to this group. However, the tree tomato is a different species, although, like the tomato, it is native to Peru and grown in home and market gardens in the semi-tropical areas of Peru, Brazil, New Zealand and other countries.

The tree tomato is woody, upright and grows 8 to 10 feet tall. It does not begin to bear fruits until 2 years after seeding and may continue to bear for 5 or 6 years. Tree tomatoes cannot survive Wisconsin winters and have to be taken inside.

Fruits of the most common tree tomato are oval, about 2 inches long and change from greenish purple to reddish purple when fully ripe. Some cultivars produce orange or bright red fruits. Fruits are not very acidic and the flavor is good.

Use tree tomato fruits in stews or preserves after you remove the tough skin and the hard seeds. The plant is propagated from the seeds or woody cuttings.

Husk tomato. The husk tomato (ground cherry) is another member of the nightshade family. Sow seeds indoors around April 1 and transplant seedlings outside around May 20, or sow seeds in the garden around May 10. Space plants 12 to 15 inches apart in rows 24 to 30 inches apart.

Harvest the husk-covered fruits (berries) when husks turn light cream in color and berries inside become yellow. Remove the husk and eat the fruit fresh or combine it with other fruits in pies or preserves. 'Goldie' does well in Wisconsin.

Climbing tomato. Tomato plants do not twine around supports, nor do they have tendrils or other structures for clinging to supports. So-called climbing tomatoes just have unusually long spaces between leaves and flower clusters. Like other cultivars, you must support them by tying or wire cages to help them grow upright.

Pink tomato. Pink-fruit tomatoes were once quite popular in home gardens. Now they are seldom grown except in greenhouses.

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