Grafting Guides
Grafting Knife Buying Guide
Single-bevel chisel grind geometry, carbon vs stainless steel, and technical specs across Victorinox, Tina, and FELCO.
Read Blade Guide →
Orchard Decision Tools & Evidence Engine
Fruit Tree Grafting, Rootstock & Orchard Planning Tools
Compare graft compatibility, choose rootstocks, calculate orchard spacing, and plan seasonal propagation work using transparent, source-linked decision tools.
Interactive Botanical Decision System
Instant Decision Tool
Quick Graft Compatibility Checker
Select a scion group and rootstock to check the reviewed matrix. Unsupported pairs return “not covered,” not an inferred score.
Goal-Based Navigation
What Are You Trying to Accomplish?
Select your current orchard management goal to jump directly to the right decision tool.
Make a Successful Graft
Learn Whip & Tongue, Cleft, Bark, and T-Budding anatomical steps.
Choose a Rootstock
Size dwarf vs semi-dwarf stocks by soil, drainage, and disease resistance.
Plan Tree Spacing
Calculate in-row and between-row spacing and orchard density per acre.
Find a Pollinizer
Match apple bloom overlaps and check diploid vs triploid S-alleles.
Store Scionwood
Control moisture at 34°F–38°F and prevent deadly ethylene gas damage.
Plan Callusing Temp
View species-specific degree bands (55°F apples vs 72°F stone fruit).
Tape & Binding Protocol
Two-layer wrapping with self-degrading Buddy Tape & budding bands.
Explore All 15 Tools
Browse complete catalog across propagation, rootstocks, and layout.
Core Launch Suite
View All 15 Tools →
Most Useful Orchard Calculators
1. Graft Compatibility Checker
Check reviewed apple, pear, stone-fruit, citrus, and fig pairings, with sources and a clear not-covered result for unsupported combinations.
Launch Compatibility Tool →2. Apple Rootstock Selector
Filter M.9, M.26, MM.111, G.41, and B.9 by soil drainage, canopy height targets, and fire blight pressure.
Run Rootstock Selector →3. Pollination Compatibility
Cross-reference apple bloom windows, S-allele genetic incompatibilities, and triploid cultivars that are unreliable pollen donors.
Check Pollination Partners →4. Fruit Tree Spacing Planner
Calculate orchard row spacing, between-row equipment clearance, and tree density per acre for dwarf and standard orchards.
Calculate Tree Spacing →5. Regional Grafting Calendar
Determine optimal seasonal windows for winter bench grafting, spring topworking, and summer T-budding by climate zone.
Explore Grafting Windows →6. Scion Storage Risk Checker
Evaluate refrigerated scionwood viability, mold risk, and ethylene exposure thresholds to prevent dormant bud abortion.
Check Storage Shelf-Life →
Seasonal Orchard Advisory
What Should I Do This Month in My Climate Zone?
Educational Reference Hub
View All 15 Calculators →
Pomological Guides & Equipment Specifications
Research Methodology
How Simple But How Builds Its Decision Tools
We build transparent horticultural decision aids from cited extension publications, research references, documented specifications, and clearly stated assumptions.
1. Extension Grounding
USDA ARS Geneva, UC ANR, WSU Tree Fruit, and UF/IFAS trial data form our primary baseline.
2. Evidence Grading
Rules are explicitly tagged Grade A (Field Data), Grade B (Extension), Grade C (Textbooks), or Unreviewed.
3. Zero Fabricated Scores
Undocumented pairings return transparent "Insufficient Evidence" rather than an invented percentage.