Agriculture · Leading & Selling
Greenhouse grower: what the job actually is
Running the climate, water, nutrition and crew of a greenhouse or nursery so that plants grow to a schedule and a buyer's order.
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The work
What this job actually is
- Managing an indoor or protected plant business: the temperature, light, humidity, water and fertilizer, and the people who do the planting, pruning, picking and packing.
- Crops vary. Vegetables such as tomatoes, peppers and cucumbers are a continuous, computer-controlled operation. Flowers and bedding plants are seasonal and tied to dates like Mother's Day. Nurseries grow shrubs and trees outdoors.
- Much of it is pest and disease control, and a lot of that is prevention. You scout for problems, release beneficial insects, keep records and notice before a small issue spreads through a whole house.
- The control systems are technical: climate computers, irrigation and fertigation systems, lighting and sensors. A grower needs to be comfortable with technology as well as plants.
- You manage a crew, which is a skill of its own. Seasonal staff, schedules, training and safety are a big part of a manager's day.
A Tuesday
What a normal day looks like
Not a good day or a bad one. The ordinary version, which is what you would actually be living.
- 6:30 — Check the climate computer and the overnight log. A heater, a vent or a pump that failed overnight is the first thing to find.
- 7:00 — Walk the greenhouse. Look at the plants, the leaves, the soil or growing medium, and the pest traps.
- 8:00 — Crew meeting. Assign tasks for the day: pruning, picking, planting, moving trays, packing.
- 9:00 — Look at the nutrient and water readings. Adjust the recipe for the crop's stage.
- 10:30 — Scout for pests. Examine the sticky cards and a sample of plants, and decide whether to release more beneficial insects or take another action.
- 12:00 — Lunch, with a phone call to a buyer about next week's order.
- 13:00 — Office work. Orders, labour schedules, records, ordering inputs, checking the energy use.
- 14:30 — A repair or a problem: a clogged irrigation line, a broken fan, a crop in the wrong place.
- 16:00 — Final walk. Check everything is set for the evening and overnight.
- 17:00 — Home, and the climate computer sends alerts to your phone through the night, or the on-call person's.
Honestly
Who loves this, and who should not do it
The second list is the useful one. Nearly every careers page leaves it out, which is why nearly every careers page reads like an advert.
- You like growing things and you like systems, technology and the numbers behind them.
- You are patient and observant. You can stand in a house of plants and see what is wrong with one.
- You like managing people and a schedule, as well as plants.
- You like the idea of farming without as much exposure to field weather, and with a more controlled environment.
- You like work that follows a production cycle and a delivery date.
- You dislike heat and humidity. Many greenhouses are hot, damp and bright year-round, and working in them in summer is demanding.
- You do not want to be called when something fails. A broken heater on a winter night or a crop under threat can mean a middle-of-the-night drive.
- You get tired of the repetition. A production greenhouse can do the same task on the same plants week after week.
- You are worried about the margins. Energy, labour and input costs are large, and prices from big buyers can be hard to push up.
- You dislike chemicals, pests or allergies. Pesticides, fertilizers and mould are part of the environment, and you need the training to handle them safely.
- You do not want to manage people. The grower role is often a supervisor of a crew, including seasonal workers.
The route in
How you actually get there in Ontario
Start by working in one
Many growers began as greenhouse workers. A summer or part-time job in a greenhouse or nursery, even simple picking and packing, tells you whether the environment suits you.A college programme gives you the technical base
Ontario colleges offer horticulture and greenhouse programmes. Fanshawe College's Horticulture Technician is a two-year Ontario College Diploma with two co-op work terms, and covers plant identification and care, soil management, greenhouse and nursery operations, and certifications such as Ontario Pesticide Certification and first aid. Students entering second year at Fanshawe must hold an Ontario G1, G2 or G licence.A degree is another route
The Ontario Agricultural College at Guelph offers a Bachelor of Science in Agriculture with nearly thirty areas of study, including plant science. The associate diploma at Ridgetown Campus is another two-year route and credits can transfer toward the degree.Certifications along the way
The Specialist High Skills Major in Agriculture includes CPR, first aid and WHMIS, plus a choice of other sector certifications. Fanshawe's programme above prepares students for Ontario Pesticide Certification.Move up from the crew
Greenhouse management is mostly an experience-based progression. You start as a crew member, become a scout or section grower, and move up to head grower or manager as you prove you can keep a crop alive and a crew steady.
Where this comes from: Fanshawe College — Horticulture Technician · University of Guelph OAC — Bachelor of Science (Agriculture) · Ridgetown Campus — Associate Diploma in Agriculture · Ontario — Specialist High Skills Major, Agriculture
The money
What it pays in Ontario
Job Bank's own figures, quoted rather than summarised, with the period they describe — so you can tell how old they are and go and check them.
- $17.95
- Low (hourly)
- $23.25
- Median (hourly)
- $43.11
- High (hourly)
Ontario, NOC 80021. Reference period 2023-2024, last updated by Job Bank on 19 November 2025. Wages vary a lot by region inside Ontario and by how long you have been doing it — the low figure is roughly where you start, not what the job is worth.
Where it is heading
The outlook for the next three years
Job Bank publishes a three-year outlook for every job in every province. It is the closest thing to an honest forecast, and it moves, so read it as a weather report rather than a verdict.
Moderate3 out of 5 stars
- Employment is expected to remain relatively stable.
- Several positions will become available due to retirements.
What that rating means: how many openings Job Bank expects in Ontario for this kind of work against how many people are likely to be looking — not whether it is a good job. A “limited” rating means more competition for each opening; it does not close the door, and it can change before you are ready to walk through it.
- 2,150
- people work in this job in Ontario
- 36%
- are women (48% across all jobs)
- 59%
- are self-employed (15% across all jobs)
Source: Job Bank — Managers in horticulture job prospects in Ontario (NOC 80021). Outlook updated by Job Bank on 10 December 2025; read by us on 5 October 2026.
Before you leave school
Things you can do now
- Take biology and chemistry. Plant nutrition, soil and pest control are applied versions of both.
- Ask about the Specialist High Skills Major in Agriculture and whether your school or a neighbouring one offers a plant science variant. Co-op can be placed in a greenhouse or nursery.
- Work a summer at a greenhouse, nursery or garden centre. Pay attention to how you feel in the heat after three weeks.
- Grow something yourself: a vegetable plant on a window, a tray of seedlings, a school garden. Track what you do and what happens.
- Join 4-H and take a plant or horticulture project if your local club offers one.
Test it
Do this before you decide anything
Reading about a job tells you almost nothing. This is designed to be done alone, this week, for free.
Grow something and watch what you have to decide
About 60 minutes- Start a small pot of seeds today: a lettuce, herb or bean in a container with soil. Write down the date, the water you gave and where you put it.
- Search for a commercial greenhouse tour video on an Ontario growers' organisation page or a college page, and write down three things the grower has to monitor all the time.
- Phone or visit a local greenhouse, nursery or garden centre and ask one question: what is the hardest time of year for you, and why? Do not ask for a job.
- Check your pot every day for a week and record what you see. Change one thing, such as light or water, and see what changes.
What it tells you. If you found yourself checking the pot, interested in what the grower said about monitoring, and the hardest-time answer sounded manageable, a summer greenhouse job is a good next step. If you forgot about the pot by day three, or the idea of being responsible for a living crop every day felt heavy, that is useful, and a horticulture job with a more flexible schedule may suit you better.
Better than any article
Questions for somebody who does this job
Most people say yes to a teenager who asks good questions. These are the ones that get real answers rather than encouragement.
- “What is the first thing you check when you walk in every morning?”
- “What has gone wrong that you could not have predicted?”
- “How did you learn the technology, such as the climate computer?”
- “What is your busiest season like?”
- “How do you manage seasonal crew?”
- “What do you wish you had studied?”
- “How many hours do you work in the peak weeks?”
Could you own one of these?
The part other career sites never mention
Yes, and Job Bank shows a high share of managers in horticulture are self-employed. Starting small, such as a plant nursery, microgreens, a few hoop houses or a seasonal bedding-plant business, is more realistic than building a commercial greenhouse from scratch. A full commercial operation involves heavy equipment and energy costs, so many growers work for one before starting their own.
Not sure this is the right list to be reading
Start from yourself, not from the job.
Future Finder is free, takes about ten minutes, needs no account and stores nothing. It will tell you which kinds of work you lean toward, and which of these pages are worth your time.
Parent of a teenager weighing this up? Career coaching for teens gets them talking to people who do the work, anywhere in Ontario.
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Wages and training requirements change. Every figure on this page is linked to the body that publishes it, and the review date above says when we last checked. If you find something out of date, tell us and we will fix it.