ASK THE PLANT® Sap Test
Unlock Hidden Nutrient Signals for Proactive Crop Management
Stay 21 Days Ahead of Deficiencies with Real-Time Nutrient Insight
Your plants are constantly signaling their health—are you listening? The Plant Sap Analysis Package offers one of the most advanced nutrient testing methods available, giving you real-time insight into nutrient uptake and mobility within the plant. Unlike standard tissue testing, plant sap analysis can reveal imbalances up to three weeks before visible symptoms appear, giving you time to act—not react.
Why Choose Plant Sap Testing?
- Early Detection – Identify deficiencies and toxicities before they cause visible damage
- Targeted Fertilization – Get crop-specific recommendations based on actual nutrient transport
- Higher Yield Potential – Optimize nutrient efficiency and reduce unnecessary inputs
- Custom Strategy – Precision data for tailored foliar or fertigation adjustments
What’s Measured in Your Plant Sap Analysis
Macronutrients & Mobile Nutrients
- Nitrogen (N) – Leaf
- Nitrate (NO₃) – Petiole
- Phosphorus (P) – Leaf
- Phosphate (PO₄) – Petiole
- Potassium (K)
- Calcium (Ca)
- Magnesium (Mg)
- Sodium (Na)
- Sulfur (S)
Micronutrients & Trace Elements
- Zinc (Zn)
- Iron (Fe)
- Manganese (Mn)
- Copper (Cu)
- Boron (B)
- Molybdenum (Mo)
- Selenium (Se)
- Cobalt (Co)
- Nickel (Ni)
Additional Indicators
- Silicon (Acid Soluble)
Your Report Includes:
- Result Interpretations – Easy-to-understand breakdown of nutrient sufficiency levels
- Tailored Recommendations – Customized fertilizer guidance for your specific crop, growth stage, and condition
Sample Submission Guidelines
- Minimum Sample Size: 30–40 leaves and petioles, depending on plant size
- Packaging: Fresh samples only. Follow instructions provided after checkout
- Need help? Call us for guidance on proper sampling technique for your crop
Turnaround Time
- Petioles: 1 business day
- Leaves: 2 business days
- Fast processing = faster corrective action.
Best Time to Test:
- During active growth
- Pre-bloom and post-bloom
- Before or after major fertilization events
- Routinely throughout high-value production cycles
Perfect For:
- Commercial vegetable, fruit, and greenhouse growers
- Crop consultants and fertility managers
- Organic and regenerative systems seeking precision input use
- Growers using sap-based fertility programs or foliar feeding strategies
Order the Plant Sap Analysis Package Today
Take control of your plant nutrition with precision and confidence.
Act before symptoms appear—optimize growth, protect yield, and reduce waste.
Frequently Asked Questions
- What are your business hours?
Our office is open Monday thru Friday from 8 am to 5 pm. We do close for major holidays, so we recommend ordering your testing and sending your sample early if a holiday is coming up. You can always reach us by email. Just send us a message at info@tpslab.com
- When will I get my results?
We understand that you need your results as soon as possible. That is why we make sure to begin processing your samples as soon as they arrive at our laboratory. When the results are ready, we will email them to the email address you provided on your submittal form. The list below will give you an idea of our usual turnaround times.
Soil Tests: 5-7 Business days
Water Tests: 5 - 7 Business days
Plants Tests: 24 - 48 Hours
Compost Tests: 7 - 14 Business days
Fertilizer Tests: 3 - 5 Business days
Heavy Metals Test: 7 - 14 Business days
We offer a rush option for an additional 50% of the testing cost, but we would encourage you to give yourself time to test before you get to a point where a rush is needed.