I don't have an official degree in horticulture just the school of hard knocks. I'm self taught and over the past 20 years I've gained a lot of knowledge not just about plants but about the industry in general. If you want my honest opinion about a degree in horticulture it is a waste of time and money. Unless you plan on going to Cornell and plan on spending a lifetime in a lab messing with genetics. Then a degree would be worthwhile.
If you really want to get into horticulture you need to get a job at a greenhouse and spend several years learning how to care for and grow plants in a proper setting. Not just growing pot in your basement/attic but learning proper care and culture practices.
Just to give you an idea of what it takes to be a grower here is a job listing for a greenhouse close to me that is hiring. This listing is for a Section Grower. Basically a fancy term for an assistant. You would need to work your way up to this job. It took me 4 years of on the job training to get to a position like this.
Essential Duties & Responsibilities
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Irrigation and Fertility Management – Awareness of proper water and fertility needs based on specific crops and responsibility for irrigation decisions, i.e. timing, frequency, and volume applied. Scheduled monitoring and proper record keeping of EC and pH levels across a variety of crops, and communication of variances. Assist in coordination of plant tissue and soil analysis as needed to ensure that plants are receiving proper nutrient levels. Maintenance, calibration, and keeping meters in close proximity is required.
Pest / Disease Identification, Control and Management – Regular scouting / monitoring of insect mites, and plant diseases of crops is required with identification and proper record keeping. Timing of applications is of the utmost importance and needs to be coordinated with Lead Grower while using best management practices for insect, mite and disease eradication. Supervision and participation in proper mixing, loading and application of chemicals. It is the Section Grower’s responsibility to determine effectiveness of application and necessity of reapplication to eradicate problem.
Crop Spacing and Timing – Awareness of desired timing for a variety of crops and how timing is affected by activities such as pinching, PGR application, spacing, etc. is essential to be successful as a Section Grower. The position will assist with crop spacing and work to ensure that crops finish according to established internal specifications and timing. As a Section Grower basic knowledge and understanding of the following is critical to success: light, temperature, humidity and their effect on crop production; irrigation and fertility management; pest and disease management; and media management. Basic math skills and understanding of how to calculate fertilizer and chemical is required while keeping proper records. Willing to maintain a Private Applicator Certificate. Willing to work 45+ hours per week and on weekends as scheduled or needed in the busy seasons