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key growing information
How to Grow Rootstock Tomatoes from Seed
Growing rootstock tomatoes for grafting: production guides, Maxifort germination, feeding seedlings, temperatures before and after transplanting, and biological pest control.
By Hensley’s Seed Co.
Rootstock Tomatoes - Key Growing Information
SCIENTIFIC NAME:
Solanum lycopersicum
CULTURE:
For more on grafting with tomato rootstocks, see our production guides: Top Grafting Tomatoes or Side Grafting Tomatoes. Maxifort can germinate unevenly under some conditions; if you graft onto Maxifort, our Maxifort guide has tips for dealing with this. Once the cotyledons (first leaves) have opened, feed with a complete nutrient solution (EC 1.0, pH 5.8) or similar whenever needed so the plants stay healthy and deep green, raising the EC as they grow. After the grafts heal, grow and manage the plants as usual, holding both day and night temperatures at 66–68°F (19–20°C). When moving plants into the greenhouse, keep it at 73–77°F (23–25°C) around the clock for a few days to encourage quick leafy growth and rooting. Once fruit starts to set, drop the night temperature to 62–66°F (17–19°C), with days held at 68–72°F (20–22°C).
DISEASES AND PESTS:
To keep pests in check, release beneficial insects on a regular schedule.
TRANSPLANTS:
About 950 plants per 1,000 seeds on average.
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