Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in:

a.Registration Statement (Form S-8 No. 333-123767) pertaining to The Davey Tree Expert Company 2004 Omnibus Stock Plan;

b.Registration Statements (Form S-8 No. 333-172738, Form S-8 No. 333-187205, Form S-8 No. 333-203865, Form S-8 No. 333-211465 and Form S-8 No. 333-259875) pertaining to The Davey 401KSOP and ESOP; and

c.Registration Statement (Form S-8 No. 333-196224) pertaining to The Davey Tree Expert Company 2014 Omnibus Stock Plan.of our reports dated

of our reports dated March 16, 2023, relating to (1) the consolidated financial statements of The Davey Tree Expert Company (the “Company”), and (2) the effectiveness of The Davey Tree Expert Company’s internal control over financial reporting, appearing in this Annual Report on Form 10‑K of the Company for the year ended December 31, 2022.

/s/ Deloitte & Touche LLP

Cleveland, Ohio

March 16, 2023