Online Academy of floriculture, berry production, and propagation material technologies.
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How is the course useful?
Why growers lose profit on hydrangeas
Weak flowering and plant diseases
Errors in watering and fertilizing
Incorrect cutting and storage
Color does not meet market expectations
Checklists and care reminders
Confidence in growing hydrangeas without typical mistakes
Access to a community of like-minded people
Comprehensive knowledge and practical skills
Your result after the course
What awaits you on the course
12 modules from variety selection to business planning
Calendar of care for each month of the year
Irrigation technologies for stable flowering
The secrets of coloring inflorescences
Cost-effective disease protection
Methods of prolonging freshness after cutting
Course Expert
Ard van Klaveren
25+ years in commercial hydrangea cultivation
Author of 40+ successful projects in Europe
Developed innovative flower storage systems
Helps small and medium-sized businesses build growth strategies and launch successful hydrangea projects
Specializes in growing, marketing, and developing the flower business for local and export markets
Van Klaveren Plant — breeding and growing hydrangeas since 1934
My goal is to share my knowledge and help you grow the best hydrangeas for your climate and market.
Ard van Klaveren
How is the training going?
100% online — learn from anywhere in the world
Flexible schedule — lessons are available 24/7
12 modules with videos, diagrams, and checklists
Feedback from the curators
Private chat
with colleagues and experts
with colleagues and experts
Certificate of completion (Comprehensive plan)
in extended packages
The course program consists of 12 modules
Our course covers 12 modules, each of which is dedicated to a separate stage of growing hydrangeas for cutting.
The program follows the grower's year, from winter rest in December to closing the season in November, and ends with business planning.
12 thematic modules with clear logic: from choosing varieties to business planning
Video tutorials + visual diagrams, tables, guides, and presentations
All checklists, instructions, and useful materials will remain with you forever, and the lessons (video and text) will be available to you for the entire period according to your subscription plan — you can learn at your own pace
Click a module to see its lessons.
Module 1Welcome+
- 1.1 Welcome & Course Introduction
Module 2Hydrangea Biology and History+
- 2.1 The Origins of the Hydrangea
- 2.2 Biological Characteristics of the Hydrangea
- 2.3 The Hydrangea Year at a Glance
Module 3Production and Business Foundations+
- 3.1 Growing Cut Hydrangeas as a Business
- 3.2 Planting in Greenhouses: Open Ground or Pots?
- 3.3 Substrate and Fertilizers
Module 4Planting Systems and Crop Establishment+
- 4.1 Greenhouse Hardware and Equipment
- 4.2 Natural Factors and Their Influence on Hydrangea Growing
- 4.3 Irrigation and Fertilization in Practice
Module 5Growing Instructions: December–January+
- 5.1 Winter Rest: Chilling Hours, Frost Protection, and Gray Mold Control
- 5.2 Winter Pruning and Planning the New Season
Module 6Growing Instructions: February–March+
- 6.1 Waking the Crop: Temperature, Light, Water, and the First Feeding
- 6.2 Shoot Management: Thinning for Quality Stems
- 6.3 Blue Flowers: Starting the Bluing Program
Module 7Growing Instructions: April–May+
- 7.1 Building the Factory: Climate, Shading, Support, and Feeding in April–May
- 7.2 The Spray Window and the First Harvest
Module 8Harvesting and Flower Preparation+
- 8.1 When and How to Harvest
- 8.2 Post-Harvest Care: Hydration, Pre-treatment, and Cooling
- 8.3 Grading, Packing, and Selling
- 8.4 Bonus: What Happens to Your Flowers at the Florist
Module 9Growing Instructions: June–July+
- 9.1 Peak Season Climate: Heat, Light, and Water
- 9.2 Harvest Rhythm and Next Year's Crop
Module 10Growing Instructions: August–September+
- 10.1 Flower Bud Induction: Designing Next Year's Product
- 10.2 The Late Harvest and Disease Pressure
Module 11Growing Instructions: October–November+
- 11.1 Closing the Season and Preparing for Winter Rest
- 11.2 Renewing and Expanding the Crop
Module 12Business Planning and Economics+
- 12.1 Your Business Plan: Costs, Revenue, and Scenarios
- 12.2 Managing Risk and Measuring Success
Tariffs and cost of participation
Pre-sale: the best price this course will ever have
Join the first group of growers before the official launch:
✓ −20% on any plan
✓ A live Q&A session with Ard van Klaveren, only for the pre-sale group
✓ Access from 1 November 2026: modules 1–3 on day one, the next modules every week
The price goes up step by stepBasicComprehensive
Pre-sale, until 31 October€1 200€3 000
1–30 November€1 350€3 375
From 1 December€1 500€3 750
Basic
For growers who want to learn on their own
€1 200€1 500
Pre-sale price until 31 October 2026
- Access to all course materials for 6 months: 12 modules, 28 video lessons, presentations, guides and checklists
- Monthly care calendar for the whole year
- Private community chat with other growers
- Group Q&A webinars
Expert support
Comprehensive
For growers who want expert feedback on their own project
€3 000€3 750
Pre-sale price until 31 October 2026
- Everything in Basic, plus:
- Access to materials for 12 months
- 4 Q&A webinars with the course experts
- 4 individual consultations with academy experts
- Personal growing plan for your goals and climate
- Recommendations on suppliers of planting material and equipment
- Curator support during the whole course
- Bonus module: Propagating hydrangeas
- Certificate of completion
- Option to visit the nursery in the Netherlands*
Only 10 participants at the pre-sale price
Additional modules
*Includes only the visit with a nursery specialist in the Netherlands. Accommodation, visa, flights, meals and other travel costs are not included.
Why is an online course beneficial?
A trip to the Netherlands is
Total cost of the trip:
€3 600
from
Round-trip flight: from €1 160
Food and transportation — minimum of €1 055
Accommodation — from €370
Individual expert consultations — from €740 per day
Visa, insurance, and additional payment expenses — from €285
The online course is
Total course costs:
€1 200
from
The same technology and proven methods from an expert with 25+ years of experience
Support, feedback, and a step-by-step learning system
Access to materials for up to 12 months
Get practical knowledge and the experience of a Dutch expert — convenient, online and three times cheaper than a trip.
Summary
saving €2400
the opportunity to study at a convenient time, without flights, visas, or additional expenses
How GreenControl Agro Academy helps you achieve your goals
Depth and practicality
The material covers the entire growing cycle, from the selection of varieties and soil preparation to the intricacies of storing and selling flowers. Each recommendation is supported by practical experience. You will not only learn "what to do", but also understand how and why it works.
Narrow specialization
An expert from the Netherlands
A complete online course on hydrangeas with a Dutch expert
Access to all materials
Step-by-step learning system
Feedback and support
This is the first course dedicated exclusively to cut hydrangeas. No fluff about general floristry — only what you need to know about hydrangeas. You get exactly what you need to succeed in this niche.
The course was developed in collaboration with a Dutch specialist with 25+ years of experience. The Netherlands is a global leader in the flower business, and you will gain access to exclusive technologies that were previously only available to the leading farms in Europe.
The program is structured logically and consistently. Learn step by step — first the basics of biology, then planting, care, and plant protection, and finally harvesting. This format will help you master even complex topics without chaos and apply your knowledge immediately.
You won’t be left alone with the material. Course participants gain access to a closed community of like-minded individuals and experts. They can ask questions, discuss their results, and receive guidance and error analysis. Practical assignments and their verification help to better reinforce skills (advanced course packages offer individual consultations).
You will be able to review the videos and use the tutorials at any time. Learn at your own pace — whether it’s in the evening after work or at the weekend, the content is always at hand, according to your plan (6 or 12 months).
Practical methods that have already yielded results on large flower farms. You will receive a clear care technology, avoid common mistakes and achieve a luxurious bloom even in difficult climatic conditions.
GreenControl is your guide to mastering European agricultural technologies
GreenControl is your start in agribusiness: from planting to prosperity!
For many years, we have been providing you with the best hydrangea and berry seedlings from Europe. Hundreds of farmers and greenhouse owners have a thriving business thanks to our work! But we are not stopping there.
Now, we are ready to share our expertise and knowledge with you!
We believe our academy can be a reliable starting point for launching new successful businesses, growing existing enterprises, and shaping a new generation of professional farmers.
We don’t just teach — we deliver proven technologies that have been tested on real farms.
20+
years in the planting material business
40+
successful projects in Europe
15
countries where our clients grow
4
communication languages
Russian, Dutch, English, Spanish
Hi, I'm Anna Kruzo!
For more than 20 years I have worked in the planting material business, and since 2010 I have been connecting growers from around the world with Dutch nurseries, breeders and experts.
Berries and floriculture are at the heart of my work: choosing the right varieties and planting material, finding reliable suppliers and building production that pays off.
Tell me about your farm or your plans, and together we will find the right course or solution.
Berries and floriculture are at the heart of my work: choosing the right varieties and planting material, finding reliable suppliers and building production that pays off.
Tell me about your farm or your plans, and together we will find the right course or solution.
Anna Kruzo, founder of GreenControl Agro Academy
Join us to avoid making the same mistakes and move towards your goals with confidence!
The main goal is to provide tools that work "here and now" and inspire action.
Why You Can Trust Me?
I have worked in the Dutch market for more than 15 years and follow every new development in the field. My commercial experience, my knowledge of the language and culture, and my close ties with the Netherlands help my clients build successful projects with the best consultants and experts in Europe.
In 2025 I created GreenControl Agro Academy. Together with Dutch growers such as Ard van Klaveren, we turn practical experience from real farms into clear online courses.
At GreenControl Agro Academy, we have gathered the most essential knowledge for a successful agribusiness. We have transferred the experience of Europe’s best flower and berry growers into clear step-by-step instructions that work in your local conditions.
Variety of learning pathways
Our courses cover three key areas: floriculture, berry business, and production of planting material.
Floriculture
Berry business
Planting material production
What you get:
Choose a course track and start learning today. Each course is a ready-made business plan in your hands.
Only practice — no fluff, only proven technologies from the Netherlands, only what brings results.
Profit-oriented — we teach not just how to grow, but how to sell profitably.
Flexible format — study online, without leaving your job, without flights or extra expenses.
Frequently Asked Questions
For greenhouse and farm owners who are planning or already running commercial cut hydrangea production, for agronomists, and for entrepreneurs who want to start a new crop. Beginners get a clear step-by-step path; experienced growers get a structured Dutch system and advanced techniques.
No. The course starts with the basics — hydrangea biology, key terms and the grower’s year — and builds up to advanced techniques. If you already grow hydrangeas or other flowers, you will get a systematic approach and practical details from Dutch growers.
The course follows the grower’s year, from December to November, so you can go at your own pace and come back to each month’s instructions when you need them. Modules 1−3 open on 1 November 2026, and the next modules open every week. There are no strict deadlines. Live Q&A sessions and consultations (included in certain plans) take place in real time, but they are optional and recordings are available. The course is designed for growers who combine learning with their main job or running a business.
Choose a plan and leave a request. We will confirm your place and send you a payment link. After payment you receive a login to our learning platform — it works in any modern browser on a computer, tablet or phone. Pre-sale participants get access on 1 November 2026. If your plan includes consultations, we will contact you to schedule them.
Yes. In every plan you get a private chat with other growers and the course experts, and group Q&A webinars where we answer the most frequent and complex questions. The Comprehensive plan also includes 4 individual consultations. Ard van Klaveren takes part in the Q&A sessions himself — you will not be left alone with the material.
No. The course is useful both for those who already have a greenhouse and for those who are only planning one. You will learn what a hydrangea crop needs — greenhouse, pots or open ground, substrate, irrigation and climate — so you can plan your investment before you build. Many growers start on a small area and scale up once the system works.
Leave a request for the course Growing hydrangeas for cutting: from "A" to "Z" basic tariff
Leave a request for the course Growing hydrangeas for cutting: from "A" to "Z" comprehensive tariff
Submit a request for the module «Breeding of hydrangeas»
Submit a request for the module «The Hydrangea Breeding module»
Submit a request for the module "Visiting a nursery in the Netherlands
accompanied by a nursery specialist"
accompanied by a nursery specialist"
Submit a request for the module «A week-long internship at a kennel in the Netherlands»