Maxifort F1 Tomato Rootstock — The #1 Rootstock in North America
by Paramount Seeds on Jul 30 2026
Why Growers Choose Maxifort
Maxifort F1 is one of the most vigorous tomato rootstocks available — and the most popular rootstock in North America. Bred for maximum yield potential and crop longevity, Maxifort is the go-to choice for commercial greenhouse growers running long-season hydroponic programs. Not sure which rootstock is right for your operation? See our rootstock selection guide or our full rootstock variety comparison.
Buy Maxifort Non-Pelleted → Buy Maxifort Pelleted →
Key Benefits
- High Vigor: Drives exceptional vegetative strength, especially valuable for weak or generative scion varieties.
- Extended harvest window: Significantly increases the length of time a crop can be harvested, maximizing ROI per planting cycle.
- Summer performance: Greatly improves production during high-stress summer conditions.
- Versatile substrate compatibility: Performs well in both soil and rockwool systems.
- Year-round hydroponic use: Recommended for continuous cropping programs to improve overall vigor and maximize yield.
Disease Resistance Package
Maxifort carries a broad resistance profile: TmC5VF2FrNK — providing protection against Tobacco mosaic virus, Corky root rot, Fusarium crown and root rot (races 1 & 2), Fusarium wilt (races 1 & 2), Verticillium wilt, and root-knot nematodes. For help decoding resistance codes, see our guide to understanding HR and IR disease resistance.
How Does Maxifort Compare?
Deciding between Maxifort and other rootstocks? Our detailed Maxifort vs. DR0141TX comparison breaks down the key differences to help you choose the right understock for your growing system and scion variety.
Available Formats
Maxifort is available in two seed formats to match your seeding workflow:
- Non-pelleted (Raw Seed): Untreated and primed — ideal for precision seeding equipment.
- Pelleted Seed: Untreated, primed, and pelleted for easier handling and singulation. Note: pelleting materials are not suitable for organic production.
Seed may not be suitable for Organic Production — please verify with your OG Certifier before use.
Further Reading
- Which Rootstock Should I Use? A Guide to Available Rootstock Seeds
- Tomato Rootstock Varieties Compared
- Maxifort vs. DR0141TX: Choosing the Right Tomato Rootstock
- Understanding Disease Resistance Codes for Greenhouse Crops
- Greenhouse Growing Media Compared
- Why Sanitation Is Critical in Greenhouse Production