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The Tomato 'Siam' is a compact, determinate cherry tomato plant, meaning it grows to a specific, manageable size and produces its fruit all at once, rather than continuously. It is a variety of Solanum lycopersicum, the common tomato.
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'Siam' is a relatively fast-growing variety. It typically takes 70-84 days from transplant to maturity.
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Like most tomato plants, 'Siam' produces small, "perfect" yellow flowers that are self-pollinating. This means they contain both male and female reproductive parts and can set fruit without the need for another plant or extensive manual pollination. This feature makes it particularly well-suited for indoor growing where natural pollinators may be absent.
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The 'Siam' tomato is particularly special for its compact, determinate growth habit, making it an excellent choice for container gardening, small spaces, and especially indoor cultivation on windowsills or countertops.
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'Siam' tomatoes require full sun, meaning at least 6-8 hours of direct sunlight daily. If growing indoors, place it on a sunny windowsill (ideally south-facing) or under grow lights to ensure adequate light for fruit production.
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Keep the soil consistently moist, but not waterlogged. Water freely in dry weather, focusing on watering the root zone (6-12 inches from the base of the plant) rather than the foliage to prevent disease. If growing indoors, ensure good drainage in the pot.
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Plant in organic-rich, well-drained soil. A slightly acidic pH (between 6.2-6.8) is ideal for optimal nutrient uptake. When potting, use a good quality potting mix.
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Ideal temperatures range from 65°F to 80°F (18°C to 27°C).
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USDA Zone 3-10
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
The Tomato 'Siam' is a compact, determinate cherry tomato plant, meaning it grows to a specific, manageable size and produces its fruit all at once, rather than continuously. It is a variety of Solanum lycopersicum, the common tomato.
'Siam' is a relatively fast-growing variety. It typically takes 70-84 days from transplant to maturity.
Like most tomato plants, 'Siam' produces small, "perfect" yellow flowers that are self-pollinating. This means they contain both male and female reproductive parts and can set fruit without the need for another plant or extensive manual pollination. This feature makes it particularly well-suited for indoor growing where natural pollinators may be absent.
'Siam' tomatoes require full sun, meaning at least 6-8 hours of direct sunlight daily. If growing indoors, place it on a sunny windowsill (ideally south-facing) or under grow lights to ensure adequate light for fruit production.
Keep the soil consistently moist, but not waterlogged. Water freely in dry weather, focusing on watering the root zone (6-12 inches from the base of the plant) rather than the foliage to prevent disease. If growing indoors, ensure good drainage in the pot.
Plant in organic-rich, well-drained soil. A slightly acidic pH (between 6.2-6.8) is ideal for optimal nutrient uptake. When potting, use a good quality potting mix.
Ideal temperatures range from 65°F to 80°F (18°C to 27°C). 
USDA Zone 3-10