Greenhouse Supervisor

wwnc; Walla Walla (WA); On-site; USD 48,000 - 64,000; Full time

Job summary

Walla Walla Nursery Co is seeking a Greenhouse Supervisor to oversee rooted plant care, nutrient and irrigation management, and environmental controls in our WA facility. You will work with the WA Grow Manager to optimize rooting, weaning, and finishing stages, ensuring plant health and efficient production.

The role requires hands-on leadership, strong observation skills, data tracking, safety compliance, and a willingness to work weekends as needed.

Qualifications

• Minimum high school diploma or equivalent knowledge.
• Strong verbal and written communication skills.
• Basic computer and math skills.
• Horticulture knowledge a plus but not required.
• Good time management and prioritization.
• Self-motivated with attention to detail.
• Adaptive personality with flexibility.

Responsibilities

• Works closely with WA Grow Manager and Assistant Grow Manager with developing grow plans for all rooted material.
• Controls young plant rooting environments to meet the needs of newly propagated crops.
• Balances environmental variables to minimize plant stress and hasten rooting times.
• Develops understanding of plant needs through observation and self study.
• Supports plant health by supplying nutrients and irrigation as crops establish.
• Identifies optimum rooting environments and groups plant types accordingly.
• Uses automation to manage environmental controls and ensure systems function.
• Ensures sanitation of rooting areas and keeps surfaces algae- and slime-free.
• Removes dead or dying cuttings and maintains weed-free propagation areas.
• Scouts daily for disease and insect outbreaks and supports IPM.
• Promotes plant structure via trimming and PGR applications where appropriate.
• Coordinates relocation of plants between rooting, weaning, and finishing areas.
• Documents inventory changes and establishes baseline metrics for improvements.
• Trains backup staff to ensure continuous operation across shifts.
• Works weekends on rotation to perform watering duties.

Skills

Verbal & written communication

Basic computer skills

Math skills

Time management

Attention to detail

Self-motivation

Adaptability

Horticulture knowledge

Education

High school diploma or equivalent

Job description

Walla Walla Nursery Co

Greenhouse Supervisor Job Description

Job Title: Greenhouse Supervisor

Reports To: Assistant Washington Grow Manager

Position Status: Full Time Regular

Compensation: $24 - 28 (DOE)

General Job Description:

Assist the assistant WA Grow Manager with the day-to‑day care of rooted plants in all programs making sure that plants receive correct levels of nutrients, water and light following best practices.

Duties and Responsibilities

• Works closely with WA Grow Manager and Assistant Grow Manager with developing grow plans for all rooted material.
• Controls young plant rooting environments to meet the needs of newly propagated and establishing crops. Balances environmental variables including humidity, temperature, leaf surface wetness, shade, ventilation, light requirements, and soil moisture content to minimize plant stress and hasten rooting times and plant development.
• Develops an intimate understanding of plant needs through close observation, ongoing education, accessing vendor partner experience (culture Sheets), self study, experience, and experimentation.
• Supports plant health and growth by supplying nutrients and irrigation at gradually increasing levels as required by the establishing crops as they progress through establishment and weaning.
• Identifies the optimum rooting environments for each species and groups compatible plant types together in appropriate environments.
• Uses automation to full advantage including but not limited to iGrow consoles, fog machines, booms, side wall and roof vents, bottom heat, etc. Ensures environmental controls are in good working order.
• Ensures sanitation of rooting areas. Surfaces are disinfected pre-prop and regularly thereafter to be kept free of algae and slime.
• Dead or dying cuttings are removed daily. Propagation environments are 100% weed free at all times.
• Scouts daily for disease and insect outbreaks. Assists IPM with control measures.
• Promotes good structure on actively growing plants via trimming and PGR applications where appropriate. Use Universal Mechanical pruning- hedge trimmer/ trimming machine where possible.
• Determines when plants are ready for relocation from rooting to weaning areas (if necessary) and finally to finishing areas. Coordinates with the greenhouse grower in moving plants to growing/finishing areas.
• Carefully documents and reports inventory changes, overall counts, losses, transfers, and plant status changes. Establishes baseline metrics for measuring future improvements. Understands, identifies and records reasons for failure consistently.
• Trains backup and support staff to ensure continuity of plant environments across shifts, weekends etc.
• Works weekends on rotation to perform watering duties as assigned

Skills and Abilities:

• Minimum high school diploma or equivalent knowledge
• Strong skills with verbal and written communication
• Basic computer skills and strong math skills
• Horticulture knowledge a plus but not required
• Skills and ability in time management and task prioritization
• Ability to be self-motivated while paying close attention to detail
• An adaptive personality with an ability to remain flexible

Physical Requirements

• Extensive pulling and/or pushing of tools, wheelbarrows, containers, etc.
• Sit and/or walk for extensive periods of time while sorting, picking, examining, weeding, transporting, spacing, pruning, etc.
• Stoop and/or bend over while performing farm balfour such as weeding, irrigating, pruning, spacing, picking, removing debris, etc.
• Performing repetitive movements such as picking, sorting, pruning, shoveling, weeding, etc.
• Lift or load up to 50 pounds
• Fieldwork begins at an assigned time shortly after daylight
• Work may be performed during environmental extremes including but not limited to light rain and in high humidity and in freezing or high temperatures.
• May be required to work when crops are wet with dew/rain and should have suitable clothing for variable weather conditions
• Must be able to walk across uneven terrain.

Professional Mindset:

• Develops a working knowledge and awareness of LEAN principles and actively participates in building a culture of continuous improvement. Strives to ensure workflow processes and stations are set up to minimize waste, improve working conditions and safety, and maximize productivity and value to the customer.
• Demonstrates commitment to learning and upholding company policies including safety and quality standards, and the mission, vision, principles and ethics of WWNC.
• Develops a strong understanding of industry and WWNC quality standards and consistently delivers work that meets or exceeds those standards by following procedures, checking work for accuracy, and promptly addressing defects or issues.
• Takes initiative for personal growth by actively “learning the business”, seeking feedback from peers and supervisors, and engaging in relevant educational, training or professional development opportunities.

Other Requirements:

• Due to this position being an agriculture growing position, you may be required to work 7 days a week depending on seasonal growing conditions.
• Must go through annual WPS training
• Private applicator license optional

Direct Reports:

• Greenhouse Leads

Employee Signature___________________________________ Date_____________________________