GrowMaster Pro — More power for your plants, so your harvest will amaze everyone! | Kalsten
Say goodbye to tiny plants - Unleash your own vegetable empire
With GrowMaster Pro, you are now stepping into the big league of urban gardening. Our breathable planting bag catapults your herbs, tomatoes, and more into record time for the ultimate freshness kick - whether indoors, on the balcony, or in the smallest garden. No waterlogging, no rotten roots - just pure power until harvest!
Brilliant technology that makes your harvest explode - and takes the work off your hands
✅ Airy fabric for greedy roots: No more rotting surprises! The breathable material reduces the risk of waterlogging and lets your plants grow wildly.
✅ Side flap that saves your harvesting life: Check your roots without stress - easily grab potatoes and more while they grow, without damaging the delicate greens.
✅ Reinforced handles for flexible relocation: Sun lovers or shade seekers? Move your plants to the perfect light spot - easy and stress-free.
Small, sturdy, and stylish - Your plants will love you
Only 30x30 cm of pure power, available in cool colors - black, green, or beige. Reusable, winter-proof, and easy to clean. Will you notice the difference? Yes, especially when your harvest makes all the neighbors jealous!
| Why GrowMaster Pro makes EVERYTHING better | Us | Others |
|---|---|---|
| Breathable material for healthy roots | ✅ | ❌ |
| Side harvesting flap for stress-free harvesting | ✅ | ❌ |
| Robust carrying handles for flexible relocation | ✅ | ❌ |
| Reusable & easy to clean | ✅ | ❌ |
Don’t miss the revolution of your gardening gameplay
• Multi-use & ultra-economical: What's gone is gone? Not with GrowMaster Pro - rinse through, use again - your wallet and the environment will thank you.
• Fits even in minimal space: Balconies, terraces, windowsills - every centimeter counts here. This powerhouse can turn even tiny spaces into a food factory.
• Universal champion for vegetables & herbs: Potatoes? Tomatoes? Herbs? GrowMaster Pro grows everything you want to know is fresh and homegrown.
Frequently asked - straight & honest
A: As long as you take care of it, GrowMaster Pro lasts for many seasons. Just rinse after harvesting and let it dry - done.
A: Absolutely. The special non-woven fabric ensures ideal air circulation and prevents waterlogging - your plants will thank you.
A: Yes! Whether in the living room, on the balcony, or in the garden - GrowMaster Pro is flexible and robust.
A: Just clean it with water - quick and uncomplicated, so you can get started right away.
Free standard shipping on all orders. No minimum purchase.
- Ships to: United States
- Processing: 1–4 business days (Mon–Fri)
- Transit: 5–10 business days
- Total delivery time: 6–14 business days
- Order cut-off: 5:00 PM PST
You will receive a tracking number by email once your order ships. Please allow up to 48 hours for tracking to update.
See our full Shipping Policy.
You have 14 days from delivery to request a return.
- Email support@open.shop with your order number to start a return.
- Items must be unused, complete, and in their original packaging.
- Return label: flat $9.99 USD, deducted from your refund — nothing to pay upfront.
- Damaged, defective or incorrect items: we cover all return and replacement costs.
- No restocking fees.
- Exchanges: contact us and mention "exchange" — the new item ships once your return arrives.
- Refunds are issued within 7 business days of inspection.
See our full Return Policy.
Questions about your order or our products? We're happy to help.
Open
Hooizolder 214
Drachten Friesland 9205CD
Netherlands
Email: support@open.shop
Customer Service:
Monday to Friday, 8:00 AM – 6:00 PM PST (excluding public holidays)
We reply to all messages within 24 hours on business days. Weekend messages are answered on Monday.
For quick answers, visit our FAQ page or use our Contact Form.
