Heavy Duty Tree Supply storefront at 4463 Central School Rd, Saint Peters MO

Built for Those Who Climb

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ACRT's Basic Climbing Course
ACRT's Basic Climbing Course
ACRT's Basic Climbing Course
ACRT's Basic Climbing Course
ACRT's Basic Climbing Course
ACRT's Basic Climbing Course
ACRT's Basic Climbing Course
ACRT's Basic Climbing Course

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ACRT Arborist Training in St. Charles Host site for ACRT Arborist Training classes ACRT Arborist Training

  • Basic Arborist

    Nov 30 – Dec 4, 2026 · Mon–Fri, 8 AM–5 PM · $1,220. Five-day rope-and-saddle course for newer climbers and ground workers: knots, climbing, limb walking, removals, ANSI safety, chainsaw safety and aerial rescue. 12 seats.

    Register for Basic Arborist 

  • Line Clearance Arborist Certification

    Dec 7–11, 2026 · $1,360. 40-hour certification for tree workers within the 10-foot zone around energized lines. Meets OSHA electrical safety training requirements; includes a one-year ACRT certification.

    Register for Line Clearance 
ACRT class location: 4835 Central School Rd, St. Charles, MO 63304

Visit the arborist pro shop

Heavy Duty Tree Supply Pro Shop

4463 Central School Road
St. Peters, MO 63304
Get directionsCall the shop

Run by working arborists. The Pro Shop is operated by the team behind Trees by Drees, a professional tree care company. The climbing, rigging, cutting and safety gear on our shelves is gear we use in the trees.

ACRT training, hosted locally. We host ACRT Arborist Training courses in St. Charles County. Classes meet at 4835 Central School Rd; the Pro Shop is at 4463 Central School Road.

Gear From People Who Climb

  • Arborist-Owned

    Heavy Duty Tree Supply is run by a working certified arborist. We stock the climbing, rigging, cutting and safety gear we rely on in the trees.

  • Talk to an Arborist

    Questions about gear, sizing or fit? Call us at (636) 667-8966.

    Call the shop 

  • Email Us

    Prefer email? Send us a note and we'll get back to you.

    Email us 

  • Visit Us

    Heavy Duty Tree Supply Pro Shop
    4463 Central School Road
    St. Peters, MO 63304

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