Practical Arboriculture: Field and Certification Essentials
Develop the hands-on expertise required for field tree work and the ISA Certified Arborist exam. Master tree biology, safe rigging, pruning cuts, pest diagnosis, and cold-climate species identification from the ground up.
Like Duolingo, but for Practical Arboriculture: Field and Certification Essentials. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
27 levels across 4 sections, about 54 minutes end to end, roughly 11 days at five minutes a day. It moves through Making the Cut: Practical Field Pruning and Jobsite Safety; Reading the Tree: Species Identification and Structural Risk; Underground and Under Attack: Soils, Roots, and Diagnosis; and The Living Machine: Tree Biology and Wound Response. It starts from scratch.
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Key ideas in Practical Arboriculture: Field and Certification Essentials
- The branch collar is a swelling where trunk and branch tissues overlap and must remain undamaged
- The branch bark ridge marks the top seam between trunk and branch bark
- The final cut sits just outside both landmarks, preserving the tree's natural defense zone
- Cutting flat against the trunk removes the branch collar, which holds the tree's chemical barrier against decay
- Flush cuts expose the trunk's inner wood and sapwood directly to fungal spores and rot
- A larger trunk wound takes much longer to seal over than a cut that leaves the collar intact
- Stubs die back because they lack leaf foliage and active sap flow
- Dead branch stubs act as an open bridge for wood-decay fungi and pests to enter the main trunk
- Woundwood cannot close over a projecting dead stub
- The first cut is an undercut made on the underside of the limb to break the bark
- The second cut is a top cut further out on the branch that severs the limb's heavy weight
- The final cut smoothly removes the remaining stub just outside the branch collar
- The remaining lateral limb must be at least one-third the diameter of the removed branch
- A lateral smaller than one-third diameter cannot pull enough sap to support the cut junction
- Failing the one-third rule leads to stem dieback, rot, and weak epicormic sprouting
- Crown cleaning removes dead, dying, diseased, and broken wood
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Practical Arboriculture: Field and Certification Essentials the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
What is the branch bark ridge on a tree?
Get it right to open this lesson and 26 more in the app.
Where Practical Arboriculture: Field and Certification Essentials takes you
- 1
Making the Cut: Practical Field Pruning and Jobsite Safety
- Targeting the Branch Collar: Proper Pruning Cuts
- Crown Architecture and Pruning Objectives
- Safe Work Practices and Jobsite Mechanics
- 2
Reading the Tree: Species Identification and Structural Risk
- Field Identification in Temperate and Cold Climates
- Evaluating Tree Risk and Structural Defects
- 3
Underground and Under Attack: Soils, Roots, and Diagnosis
- Soil Chemistry, Compaction, and the Root Zone
- Diagnosing Pests, Pathogens, and Environmental Decline
- 4
The Living Machine: Tree Biology and Wound Response
- Vascular Anatomy and Energy Movement
- Compartmentalization of Decay in Trees (CODIT)
4 sections · 9 units · 27 levels. Built to play, not to enroll.
You pick the voice
Practical Arboriculture: Field and Certification Essentials is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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