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Bag of Tomato Fertilizer 4-18-38 for hydroponics, soil, and foliar application

Tomato Fertilizer 4-18-38 Hydroponics, Soil & Foliar Application

by Greenway Biotech, Inc.
$24.99 - $214.99
$24.99
$24.99
$24.99 - $214.99
$24.99

Tomato Fertilizer 4-18-38

Maximize your harvest with Tomato Fertilizer 4-18-38, a premium, 100% water-soluble nutrient blend specifically formulated for the flowering-through-harvest window of fruiting nightshade crops. With a low-nitrogen, high-phosphate, and extremely high-potassium ratio, this formula directs your plants' energy strictly toward robust fruit development rather than excessive leafy growth.

Ideal For:

  • Fruiting Nightshades: Highly effective for tomatoes, peppers, eggplants, and tomatillos.

  • Versatile Application: Dissolves completely and cleanly for use in soil, containers, drip fertigation, hydroponics, and foliar spraying.

Key Features & Benefits:

  • Targeted NPK Ratio: * 38% Potassium: Maximizes fruit sizing, sugar transport, firmness, and post-harvest shelf life.

    • 18% Phosphate: Drives prolific flowering and reliable fruit set.

    • 4% Nitrogen: A controlled dose to keep energy focused on fruit production.

  • Chelated Micronutrients: Fortified with EDTA-chelated iron, manganese, zinc, and copper, plus essential boron and molybdenum in every bag.

  • Tested & Certified: CDFA registered and rigorously third-party lab-tested for heavy metals, with results consistently well below required limits.

Important Handling & Application Rules:

  • Calcium-Free by Design: This formula intentionally omits calcium, as calcium and concentrated phosphate will form an insoluble precipitate when mixed in a stock solution. Always apply a separate calcium source independently for a complete nutrient program.

  • Mixing Best Practices: Pre-dissolve each fertilizer separately and always verify your solution's pH and EC before applying.

  • Foliar Spraying: To prevent leaf burn, only apply foliar sprays in the early morning or late afternoon when temperatures are below 85°F.

  • Storage: Always store tightly sealed in a dry environment.

Frequently Asked Questions

What makes Tomato Fertilizer 4-18-38 ideal for fruiting nightshade crops?
Tomato Fertilizer 4-18-38 is specially formulated with a low nitrogen, high phosphate, and extremely high potassium ratio, which directs plant energy toward robust fruit development, making it perfect for crops like tomatoes, peppers, eggplants, and tomatillos.
Can Tomato Fertilizer 4-18-38 be used in different growing systems?
Yes, it is highly versatile and dissolves completely, making it suitable for use in soil, containers, drip fertigation, hydroponic systems, and foliar spraying to support various cultivation methods.
What are the key nutrients in Tomato Fertilizer 4-18-38 that promote fruit quality?
This fertilizer contains targeted NPK ratios with 38% potassium for fruit size and shelf life, 18% phosphate for flowering and fruit set, and 4% nitrogen to focus energy on fruit production, along with chelated micronutrients like iron, manganese, zinc, and copper.
Are there any special handling or mixing instructions for Tomato Fertilizer 4-18-38?
Yes, it is calcium-free by design; always pre-dissolve the fertilizer separately, verify pH and EC levels before application, and apply foliar sprays in cooler parts of the day to prevent leaf burn. Store tightly sealed in a dry environment.
Is Tomato Fertilizer 4-18-38 tested for safety and quality?
Absolutely. It is CDFA registered and third-party lab-tested for heavy metals, with results consistently below required safety limits, ensuring a safe and effective nutrient source for your crops.
What makes Tomato Fertilizer 4-18-38 ideal for fruiting nightshade plants like tomatoes and peppers?
Tomato Fertilizer 4-18-38 is specially formulated with a low nitrogen, high phosphate, and extremely high potassium ratio, promoting robust fruit development while minimizing excessive leafy growth, making it perfect for tomatoes, peppers, and similar nightshade crops.