Frequently Asked Questions

GreenStalk Information

Is the GreenStalk Vertical Planter patented? 

Yes! We have been issued both a design and utility patent. There's nothing else like GreenStalk Vertical Planters on the market.

What can I grow in the GreenStalk Vertical Planter? 

A wide variety of vegetables, strawberries, flowers, and herbs grow well in the GreenStalk Vertical Planter. We recommend growing larger plants in the GreenStalk Original and smaller plants in the GreenStalk Leaf. For a complete list, please click here.

Can the GreenStalk Vertical Planter be used indoors? 

Our planters can be used indoors. We recommend adding grow lights based on your growing environment. Adding a GreenStalk Mover or Ultimate Spinner would be a necessity for ensuring water doesn't drain out onto the floor. Please note that water cannot be held for an extended amount of time in either GreenStalk Base and should be drained into another container.

Can I download a copy of the Vertical Planter Instructions? 

Yes! You can download a PDF of the Vertical Planter Instructions here.
Download our Plant Planner Template here.

Customer Service

When and how can I contact your team?

You can reach our customer service team Monday through Friday from 9a-4p (EST). We’re here to answer any of your questions by phone at 865-337-7055 or by email at

Is the GreenStalk available internationally? 

We currently are only able to ship our products within the United States and Canada. We hope to expand to other countries in the coming years.

Do the GreenStalk Planters come with a warranty?

We stand behind our products with a warranty that ensures our planters won’t crack or fade for at least 5 years. If you encounter any issues, simply send a photo of the damaged pieces to and we will happily replace the affected piece(s) at no cost to you.

What is your return policy?

We are committed to every customer having the best growing experience possible. If you aren’t loving your GreenStalk garden, we’d like to know so we can make it right.

We are so confident that you will love growing with GreenStalk that if you are not completely satisfied with your planter, send it back for an exchange or full refund less return shipping within 90 days of purchase.

Contact us at for a Fedex Return label at a flat rate cost of $25 for large boxes (with blue or green stamp) or $15 for smaller accessory boxes. Please note perishable items such as seeds and fertilizer cannot be returned.

If you would like to cancel an order, please contact us immediately at and we will do out best to cancel it before it gets sent out. If the order has already been processed it may not be able to be canceled. 

Gardening Tips

How much soil do I need?

Each Original Tier holds 1 cubic foot of potting mix (about 8 gallons). Each Leaf Tier holds 0.8 cubic feet of potting mix (about 6 gallons).

Do I need special soil to use GreenStalk?

The GreenStalk team's favorites are Fox Farm, Espoma, and Pro-Mix brands. However, any high-quality, lightweight, moisture-retaining, potting mix would work well. Avoid using topsoil or garden soil.

How long does the water sit in the reservoir? 

The GreenStalk's patented slow drip watering system allows water to drain thru the system within about 5 minutes. If used correctly, there will be no sitting water anywhere in the system. The bottom of the GreenStalk includes little “feet” that allow water to drain out and away from the planter.

Other Information

How can I request a donation from GreenStalk?

We are passionate about giving back to the community and helping people grow their own food. If you are a teacher or administrator in charge of a charity or educational garden, please email us at Please note that due to the number of requests that we receive, we are unable to donate GreenStalk Planters to individuals at this time.

I have a GreenStalk Vertical Planter and I would like to add another tier to expand my garden. Where can I get that? 

You can order additional tiers or pieces for your GreenStalk in our store at

To nourish your plant growth, explore our shop today! 

There's an easier way to garden.