As spring returns and temperatures begin to rise, a familiar season kicks off for cannabis enthusiasts and home growers across Europe: the grow season. This period, typically running from early April through September, is when many hobbyists and beginners alike start growing their own cannabis plants—outdoors or indoors. For retailers and smartshops, this annual window represents a key opportunity to educate customers, fine-tune product assortments, and support a growing community of DIY growers.
But with a wide variety of seeds, growing techniques, and tools available, how can retailers ensure their customers are well-informed and set up for success? This guide offers a comprehensive overview of what the grow season means, what types of seeds to recommend, and which tools and nutrients can make all the difference.
What Is the Cannabis Grow Season?
Grow season refers to the natural cycle of outdoor cannabis cultivation that begins when daylight increases and temperatures consistently rise above 10°C. In most of Europe, this makes April through June the ideal time to start planting, depending on the strain and whether you’re growing outdoors or indoors.
While indoor cultivation can technically happen year-round, outdoor growing is typically preferred by beginners due to its low cost and simplicity—assuming the climate is right. Retailers can guide customers by providing educational support and essential tools, especially during these early months when planning begins.
Understanding Cannabis Seed Types
One of the most important decisions for any grower is choosing the right seeds. At Happy Holland, we offer a full assortment of Royal Queen Seeds, including feminized, autoflowering, hybrid (F1), CBD-rich, and exclusive Tyson 2.0 x Royal Queen Seeds. Here’s a breakdown of the main categories:
Feminized seeds are designed to produce only female plants, which are the ones that generate cannabinoid-rich flowers. This eliminates the need to identify and remove male plants, streamlining the process and increasing yield reliability. Feminized seeds are perfect for growers seeking maximum harvest with minimal uncertainty—especially in outdoor grows where identifying male plants can be tricky.
Autoflowering seeds switch from vegetative growth to the flowering phase automatically, without needing a specific light cycle. These plants are compact, fast, and robust—ideal for discreet balcony or indoor grows. Their short grow cycle (often just 8–10 weeks) makes them popular among beginners, urban growers, and those wanting quick results with less complexity.
CBD-dominant seeds produce plants with high cannabidiol content and low levels of THC, providing therapeutic benefits without psychoactive effects. These are increasingly in demand among wellness-focused consumers who seek natural solutions for relaxation, inflammation, sleep support, and mood balance.
F1 Hybrid seeds are a new innovation in cannabis breeding. They’re produced by crossing two pure genetic lines, resulting in offspring with exceptional uniformity, strength, and yield potential. These seeds grow into plants that are nearly identical in height, structure, and flowering time. Their high resistance to pests and environmental stress also makes them ideal for less experienced growers who still want consistent results.
This premium collaboration merges the branding power of Mike Tyson with the cultivation expertise of Royal Queen Seeds. These exclusive strains are powerful, visually striking, and genetically stable—making them especially attractive to collectors, connoisseurs, and experienced growers looking for something unique.
The iGrowCan: A Beginner-Friendly Cultivation Kit
For those new to growing or looking for a compact, all-in-one solution, the iGrowCan offers an ideal entry point. This ready-to-use cannabis grow kit includes everything needed to grow a healthy cannabis plant from seed to harvest—directly inside the can itself.
Each iGrowCan contains:
• Two Royal Queen Seeds (autoflowering)
• 1 Eazy Plug germination plug with optimal pH and air-to-water ratio
• High-quality organic cannabis nutrients
• 1.7L compressed coco compost mix
• Instruction manual
The plant grows directly in the metal can, reaching 30–60 cm in height, and is ready to harvest in around 10 weeks. This makes the iGrowCan perfect for windowsill cultivation or for gifting to cannabis-curious beginners. No extra pots, lighting setups, or soil purchases are needed—just add water and follow the simple instructions.
Essential Growing Accessories for a Successful Harvest
Beyond seeds and starter kits, having the right growing accessories can make all the difference in plant health and yield. At Happy Holland, we offer a carefully selected range of nutrients, soil enhancers, and tools to support every stage of cultivation.
Plagron Nutrients and Substrates
Plagron is one of the most trusted names in the cannabis growing world. Their professional-grade fertilizers, boosters, and coco-based substrates are ideal for both novice and experienced growers. Whether your customer is growing indoors or outdoors, Plagron products are known for their ease of use and high performance. Bestsellers like Plagron Terra Grow, Power Roots, and Green Sensation are perfect for maximizing growth and flowering phases.
Narcos Plant Nutrition & Starter Kits
The Narcos line of cannabis nutrients stands out for its bold branding and results-driven formulas. Designed with clear instructions and tailored kits, these products are great for beginners. Their complete starter kits include everything from base nutrients to bloom boosters—making it easy for newcomers to get started with confidence.
Easy Start & Easy Boost: Smart Additions for Beginner Growers
For those looking to simplify the growing process without compromising on quality, Easy Start and Easy Boost are must-haves:
• Easy Start is a beginner-friendly seed germination kit that includes a tray with 20 pre-filled seedling pots and a Bacto microorganism mix to activate the seeds. Even users with minimal experience can achieve high germination success and a strong start to their grow.
• Easy Boost Organic Nutrition offers a complete nutrient solution in one dose. Just one application feeds your plant for up to 10–12 weeks, supporting healthy growth and high yields. A 100g pouch is perfect for 2–3 plants, making it ideal for small grows or iGrowCan setups. For larger cultivation, a 1kg bag can support up to 25 plants.
These compact, effective products are a great addition to your smartshop assortment—especially for customers looking for a low-maintenance approach.
Tips for Retailers During Grow Season
To make the most of the grow season, consider these steps:
• Educate your staff so they can clearly explain seed types, growing techniques, and product benefits.
• Refresh your displays to highlight seeds, starter kits like the iGrowCan, and growing accessories.
• Offer educational handouts or QR codes linking to online resources or blog posts.
• Encourage upselling by pairing seeds with starter nutrients or grow kits.
And above all: make sure your shop is stocked and ready early in the season—many growers plan ahead and shop before April begins.
Conclusion: Grow Season Is Your Time to Cultivate Loyalty
The start of grow season isn’t just a chance to sell more products—it’s an opportunity to build relationships, offer guidance, and help your customers succeed. By curating a reliable selection of seeds, kits, nutrients, and accessories, your shop becomes more than a supplier—it becomes a trusted resource.
At Happy Holland, we’re here to support your success with high-quality products, seasonal advice, and B2B-focused solutions. Ready to gear up for grow season? Explore our full grow collection and let your store bloom.
