The Dwarf Tomato Project was cofounded by Craig LeHoullier from Hendersonville, North Carolina, USA and Patrina Nuske Small from Bemboka, New South Wales, Australia in 2005
It all began with a comment made by Craig on a tomato forum at Gardenweb. He had noticed that the Dwarf category was basically limited to one variety. This variety is called New Big Dwarf and first appeared in the 1915 Isbell Catalogue and was developed by crossing Dwarf Champion late in the 1800s.
New Big Dwarf as a variety was largely forgotten because the flavour was bland. Craig, Patrina and a group of volunteers set about crossing New Big Dwarf with various flavour focused heirloom varieties. Stabilizing a new variety can take anything up to 8 years but Craig and Patrina had the advantage of 2 growing seasons each year. Craig in the Northern Hemisphere and Patrina in the Southern Hemisphere was an opportunity to speed up the stabilization process with each project tomato.
So why develop Dwarf varieties? The growth habit of between 3ft and 6ft high is unlike tall growing indeterminates so Dwarfs can be more easily grown in pots on a balcony with less need for tall staking. Manageable tomato plants which can often show 2 or 3 main fruiting stems and potential for a similar yield to that of an indeterminate plant.
When Dwarf varieties are crossed with indeterminates the F1 offspring will show do dwarf plants as the Dwarf gene is recessive. The F2 however should produce 25% seedlings with dwarf growth habit. This is where the fun begins. Best practice is to grow out a number of F2 seedlings and choose the tomato characteristics you want from any given plant. Stability can show as early as F5 but it can vary greatly with some lines being stubborn with fruit consistency.
At the time of writing this blog 135 Dwarf varieties have been officially released. They come in all shapes and sizes exactly like indeterminates so there is a dwarf variety for everyone be it a large purple beefsteak or a pink cherry variety. Early ripening from 65 days up to late season 90 days, potato leaf, regular leaf, variegated leaves, and 3ft up to 6ft tall.
The Dwarf variety breeders have thoughtfully created new varieties with flavour being the key driver.
Dwarf varieties are becoming available with seed companies worldwide and proving to be a popular addition to tomato growing options. Victory Seeds in USA are the only company that stock all 135 varieties. At Tomato Revolution we currently stock 25 Dwarf varieties and plans are afoot to double this over the coming seasons.
The Dwarf Tomato Project continues to expand and it will be fascinating to follow its progress and new additions.