FAQ

EarthBox Garden Center · Growing answers

A little guidance.
A lot of growing.

Have an EarthBox question? Start here for help choosing your system, planting, watering, and getting ready for the next season.

Preview of the illustrated EarthBox setup steps from the planting guide

A handy guide to keep

Plant with confidence.

Keep our EarthBox Planting Guide nearby as you set up your garden. It includes a plant and fertilizer placement chart, growing tips, and 12 illustrated setup steps.

2-page PDF · 9.6 MB
Click the preview or button to download the full guide.

Download the planting guide · PDF

01 / Growing essentials

Choosing your EarthBox

Find the right fit for your space and what you want to grow.

What sizes and colors are available?

The Original, Junior, and Root & Veg systems offer different growing spaces. Compare them on our Types of EarthBoxes page, then visit the online store for current colors, availability, and pricing.

Can I grow more than tomatoes?

Yes! EarthBoxes can grow vegetables, herbs, flowers, and more. Use our Central Florida Planting Schedule to explore crops and suggested planting seasons. Follow the planting layout for your system.

Can I grow different plants in the same box?

Yes. Choose plants with similar light, water, and feeding needs, and leave enough space for their mature size. Avoid combinations where a larger plant shades out a smaller one. Ask us for help planning a combination.

Are some plants too large for an EarthBox?

Medium and large trees are not recommended. Consider the plant’s mature height, root space, and stability in wind. Visit the garden center for advice on longer-lived plants and suitable varieties.

02 / Growing essentials

Planting & setup

Give your plants a good start, from potting mix to placement.

Where should I place my EarthBox?

Choose a location with the sunlight your crop needs and easy access to water. Avoid roof runoff and keep the overflow opening clear. A screened porch can work if it receives enough light. Consider support for tall plants and protection from animals.

What kind of potting mix should I use?

Use a lightweight, well-draining potting mix suited to the EarthBox system. Heavy garden soil and topsoil are not suitable substitutes. Follow your system’s instructions, or ask us to help choose the right mix.

What does the mulch cover do?

The cover helps conserve moisture, reduce weeds, and protect the fertilizer from rain. Keep it in place during the growing season. It does not make plants immune to pests or disease.

Can I start from seed?

Yes. Follow the seed packet’s planting depth and spacing, along with your EarthBox instructions. Starter plants are another option. The planting schedule marks crops suggested for starting from seed with an asterisk (*).

Can I grow organically?

Yes. Choose growing supplies appropriate for organic gardening and follow the product labels and your EarthBox setup instructions. Contact the garden center for help selecting supplies.

03 / Growing essentials

Watering & everyday care

Simple habits to keep your garden growing.

How much water does the reservoir hold?

The Original holds approximately 3 gallons, Root & Veg holds 2 gallons, and Junior holds 1 gallon. Reservoir capacity is not a watering schedule—plant size, weather, and crop type affect how quickly water is used.

How often should I water?

Check the reservoir regularly and refill through the fill tube until water runs from the overflow opening. Young plants may need water every few days; mature plants need it at least daily and may need more frequent refills in hot weather. Do not wait for the reservoir to dry out.

What is dolomite, and why is it used?

Dolomite supplies calcium and magnesium and helps adjust the growing mix’s pH. Use the amount specified for your EarthBox system and crop. Ask us about crop-specific preparation, especially for blueberries and strawberries.

Do different plants need different fertilizer?

Feeding needs vary by crop. Follow the fertilizer type, amount, and placement recommended for your system and plants. Our garden center can help you choose supplies for vegetables, herbs, flowers, or fruiting plants.

Do I have to use pesticides?

Not every garden needs a treatment. Check plants regularly and identify the problem before choosing a product. Bring photos or a description to the garden center for help. If using any treatment, follow its label for the crop and intended use.

04 / Growing essentials

Replanting & the next season

Refresh your setup and get ready to grow again.

Do I need to replace all the potting mix each season?

Not necessarily. Check the mix’s condition and how the last crop performed. When replanting, remove old roots and spent fertilizer and refresh the mix as your system’s instructions direct. If the mix is badly deteriorated or disease is suspected, ask us whether a full replacement is best.

Should I remove the old fertilizer?

Yes. Remove the remaining fertilizer from the previous planting, then add fresh fertilizer in the amount and placement specified for your system. Our Original EarthBox Replant Kit is available in the online store.

Should I add dolomite again?

Follow the replanting instructions for your system and crop. Standard vegetable replanting calls for fresh dolomite, but preparation can differ for crops such as blueberries and strawberries. Check with us before preparing a specialty planting.

What should I do if I am not replanting right away?

Remove the old plants and keep the growing mix covered to help keep weeds out until you are ready. Before planting again, follow the replanting steps for your system. See our videos for more growing guidance.

Let’s grow together

Still have a question?

Call or stop by the garden center for help with your EarthBox. Our free gardening classes meet Wednesdays and Saturdays at 10 a.m.—no registration required.

For model-specific setup and replanting amounts, follow the instructions supplied with your system. Original EarthBox instructions (PDF) · Original replanting instructions (PDF)