John Mark

Horticulture professional with hands-on expertise in greenhouse propagation, crop production systems, and technical grower support within commercial floriculture. Strong background in climate-controlled propagation of high-value crops and performance optimization of chrysanthemum varieties. Combines agronomic understanding with commercial acumen to drive grower success, product performance, and market adoption.

Junior Account Manager – Chrysanthemum at Dümmen Orange (2026-03 – Present)

• Delivering technical consultancy to 5+ commercial growers, increasing marketable yield by up to 25% and improving Grade A stem quality by 20% through optimized agronomy protocols.
• Analyzing multi-site crop performance data to refine planting densities, pinching regimes, and harvest timing, reducing off-spec production by 20%.
• Improved stem uniformity and consistency by 25% through targeted climate, nutrition, and B9 regulation strategies.
• Coordinated grower–breeder feedback loops, reducing issue resolution time by ~20% and accelerating variety commercialization cycles.
• Co-Leading commercial trials of 30+ chrysanthemum varieties, achieving up to 50% successful market adoption.

Propagation Coordinator at Dümmen Orange (2025-09 – 2026-02)

• Oversaw high-volume propagation operations for roses, carnations, gerbera, and chrysanthemums, managing 100,000+ rose plants daily with over 83% rooting success rates.
• Optimized greenhouse climate conditions (RH, temperature, misting cycles), reducing cutting stress by and accelerating rooting time with a one week buffer
• Assisted in the Standardizing of propagation protocols (cutting selection, sanitation, tray management, tools sanitation, sorting, shifting), improving batch uniformity by 25% and reducing disease incidence to <5%.
• Helped in reducing propagation waste from 30% to <10%, significantly improving operational efficiency and input utilization.
• Oversaw implementation of FIFO cold storage system for budwood, decreasing non-viable material by up to 40% and improving graft success rates especially for eyebudding technique.
• Ensured >95% reliability in plant supply to downstream production through improved scheduling and throughput efficiency in quality and in full through constant communication and low wastage.
• Provided technical after-sales support to growers, reducing issue resolution time by and improving crop establishment outcomes

Intern – Production & Propagation at Dümmen Orange (2024-06 – 2024-08)

• Completed a hands-on internship focused on learning full-cycle floriculture production, from propagation to flowering, across multiple high-value crops.
• Developed foundational expertise in fertigation, irrigation, and climate management by supporting daily greenhouse operations.
• Built practical knowledge of pest and disease management through active participation in scouting and IPM programs.
• Demonstrated a proactive learning approach by engaging across teams, rapidly acquiring skills in crop handling, monitoring, and production decision support

Intern – Sales & Agrovet Operations at Misper Agrovet (2023-06 – 2023-08)

• Gained hands-on experience in diagnosis-driven crop protection and fertilizer recommendations, building practical skills in identifying crop issues and suggesting appropriate solutions.
• Learned and applied basic sales processes (customer engagement, product recommendation, and closing), contributing to increased product awareness and uptake.
• Developed working knowledge of inventory management and Excel-based tracking, supporting stock monitoring, demand awareness, and basic sales recording.
• Built foundational understanding of agrochemical products, fertilizers, and their field applications through daily customer interactions and supplier engagement.
• Observed and supported procurement, stock control, and cost management processes, gaining insight into the business and financial side of agro-input retail.
• Strengthened communication skills by assisting farmers with practical agronomic advice and after-sales product guidance.
• Demonstrated a strong learning mindset by actively engaging with customers, suppliers, and colleagues to deepen understanding of crop production challenges and solutions.

Bachelor of Science in Horticulture – University of Nairobi

High School – Pioneer School