Make the most of limited garden space by growing tomatoes in buckets and grow bags. Planting tomatoes in these easily accessible containers provides an inexpensive alternative to traditional backyard gardening. Container gardening tends to level the playing field in the game of home gardening, allowing even gardeners with less garden area the opportunity to produce high yielding plants. Buckets and grow bags provide convenient mobility, can be kept on a deck or patio for easy care, picking, and monitoring.

Both methods provide environments that will produce robust tomato plants with delectable fruits if properly planted and cared for. While the concept of using buckets and grow bags are relatively the same, there are some vital differences worth exploring. We will take you through the best ways to plant tomatoes in buckets and grow bags along with some tips for developing a successful crop in each of these useful containers.
Helpful Tips for Planting Tomatoes in Containers
Before we start, here are some useful tips to keep in mind when growing tomato plants in buckets and grow bags.
- Choose determinate varieties of tomatoes when planting in buckets and grow bags.
- Ensure successful tomato plants by using a container that is big enough-the bigger the better.
- Add a little pre-plant application of a dry blend granular organic fertilizer in the planting hole before you place your plant.
- Plant tomato plants deeply in the soil so that roots will grow from underground stems, resulting in more vigorous healthy plants.
- Plant tomatoes in full sun.
- Water regularly, using care not to overwater or underwater, which can both lead to the demise of your tomato plant.
- Consider placing a tray of water underneath your bucket or grow bag to promote self-watering from the roots up.
- Use organic fertilizer to feed your tomato plants when they are potted. Tomatoes are heavy feeders of nitrogen and require this nutrient to grow into hardy producers. Make sure to mix or “scratch” the granular fertilizer into the soil to it doesn’t get washed away when you water. Supplement your granular organic fertilizer with a liquid organic fertilizer every 2-3 weeks with your regular watering routine for quick release nutrients.
- Add a small amount of Epsom salt to your tomato plant container. This will supply magnesium to the plant, lessening the likelihood of blossom rot on your fruit.
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Best Way to Plant Tomatoes in Buckets
Growing tomatoes in buckets and pots is a terrific way for anyone to enjoy way fresh tomatoes off the vine. One of the biggest mistakes gardeners make when growing tomatoes in containers is planting them in too small of a pot. Tomatoes are heavy feeders with a well-developed root system, and keeping them confined in too small of a pot will stunt their growth and diminish their yield. Follow these steps for the best results.
Supplies:
- 5 Gallon Bucket or pot
- Organic Potting Mix
- Organic Fertilizer
- 1 Tbsp Epsom Salt
- Water
- Determinate Tomato Seeds or Plants
Mulch (optional)

Steps for Successful Planting
- Find an area in the yard or on the patio that receives plenty of sunlight for tomatoes to grow successfully.
- Make certain that there are drainage holes in the bottom of the bucket before planting. This is essential so that your plant does not drown.
- Fill the container half-full of potting mix.
- Place the plant into the bucket. You can plant tomato plants a little deeper in the soil that other plants because the stems will sprout roots creating a more robust plant. If sowing seeds directly, do so when the pot is ¾ of the way full, sow seeds, and lightly cover with one inch of soil.
- Add water when the bag is approximately half-way full.
- Add more potting mix around the tomato plant.
- Sprinkle organic fertilizer and Epsom salt around the base of the plant. This will supply the tomato plant with essential nutrients like nitrogen and magnesium for healthy growth and protection from a disease like blossom-rot.
- Continue to build up the soil until the bucket is full.
- If desired, you can add some light mulching to finish off the pot and protect the soil.
Water Requirements
It is essential to water tomato plants that are planted in buckets until water runs freely from the bottom. Water in the morning and recheck the soil moisture levels in the afternoon. If soil feels dry about one inch below the surface, it’s time to water again. Add mulch to tomato plants to help with moisture retention.
Best Way to Plant Tomatoes in Grow Bags
Growing tomatoes in fabric grow bags is an excellent option when it comes to container gardening. It acts like a bucket in many of the essential ways but has additional attributes. As we now know, tomatoes have strong root systems that grow vigorously. The texture of the fabric grow bag allows the roots to prune themselves when they hit the edge of the bag. The benefit of this self-pruning is that instead of encircling the shape of the container over and over again, the roots offshoot into new fibrous hairs continually. This process makes the root system in tomatoes planted in fabric grow bags healthier and more robust.
Supplies:
- Fabric Grow Bag
- Organic Potting Mix
- Organic Fertilizer
- 1 Tbsp Epsom Salt
- Water
- Determinate Tomato Seeds or Plants
- Mulch (optional)

Steps for Successful Planting
- Select an area that receives plenty of sunlight for your tomatoes to grow successfully.
- Open the grow bag and fill with three to four inches of potting mix, pressing the soil firmly around the base. This will bolster the form of the grow bag.
- Place the plant into the bag. You can plant tomato plants a little deeper in the soil that other plants because the stems will sprout roots creating a stronger plant. If sowing seeds directly, do so when the bag is ¾ of the way full.
- Add water when the bag is approximately half-way full.
- Add more potting mix around the tomato plant.
- Sprinkle organic fertilizer and Epsom salt around the base of the plant. This will supply the tomato plant with essential nutrients like nitrogen and magnesium for healthy growth and protection from a disease like blossom rot.
- Continue to build up the soil until the bag is full.
- If desired, you can add some light mulching to finish off the pot and protect the soil.
Watering Requirements
Planting tomatoes in grow bags can take some of the guesswork out of watering. The fabric the grow bag is composed of is porous and allows air to circulate through soil and water to drain. Grow bags reduce your chances of over-watering, but you still can run the risk of not watering enough. With air circulating circulates so efficiently through the grow bag, soil can dry out faster than you might expect. Regular watering is essential for successfully growing tomatoes in grow bags.
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Would like you to know that I’m a 64 year old Electrican trying to retire that loves my garden and love to mentor new gardeners. Your G & B soils have really changed how I now garden and teach. Used commercial green house soil in my green house for many years till I was introduced to your soils. My tomatoes in 4″ pots now go to market almost totally rootbound and large pots are pretty much fool proof to grow. One problem is the longer you garden the harder the fight with bugs and weeds. Carrots are wonderful but a pain to grow,weeds and carrot magnets. Now I use a box with 6″ clear sides filled with GB raised bed mix. No weeding,EZ thinning,6″ clear guard slows down low flying maggot flys and fly traps on edge catch most low flying bugs. We now grow Mokum carrots without fuss. May sell this year at farmers market if they reopen and would love some promotional materials like a banner and hand outs. I make no money promoting your products but make better farmers, urban and country. Keep up the good work and I will keep selling promoting you products.
Happy to hear you found a solution to your pests and weed problems! Thank you for this wonderful comment, we are overjoyed that you are having such great success with our product. We hope you get the chance to sell at farmers markets soon!
An answer for the person asking for a banner or sign? I know you have them. At the Nursery, they hang your empty bags behind the check out.. with prices of each. They always ask if we need any of them.
You don’t state a preferred size of bag – only “only there bigger there better.” How much Epsom salts for a 15 gallon grow bag?
Hi Greg, it is generally recommended to mix in 1 tablespoon of Epsom salt for each foot of your tomato plant. For example, if your plant is 2 feet tall, you would mix in 2 tablespoons of Epsom salt to the top layer of your soil. You can also add 1 tablespoon of Epsom salt into the planting hole at the beginning of the season. You can also mix in 1 tablespoon of Epsom salt with 1 gallon of water and use it to water your plants throughout the season. Happy Gardening!
I haven’t got the hang of watering in a grow bag yet. I’m using a 10 gallon bag for a determinant tomato. I’ve been using a moisture meter, and water whenever it is just passed moist on the way to dry. The plant always looks stressed with leaf curl. Even after what I think is a good watering, the leaves stay curled. It’s my first year and I’m sure I’m making lots of rookie mistakes.
Hi Lisa, we’re sorry to hear about your tomato plants. There could be a few reasons your plant leaves are curling. September is a bit late in the tomato season, so your plant could be slowing down.
Leaf curl is also a sign of environmental issues. Some causes include too much sun or heat. If you think this may be the case, try using some shade cloth during the hottest part of the day or moving your plant to a bright but shady location to keep the sun off of it. You can learn more about protecting plants from the heat here, https://www.kellogggarden.com/blog/gardening/best-ways-to-protect-plants-from-the-heat/. And, you can find shade cloth here, https://bit.ly/3hRbQM0.
The plant may also be receiving too much nitrogen. Be sure to use a well-balanced fertilizer specifically for vegetables. Fertilize again as the plant begins to produce fruit. Testing your soil will give you information on what your plant may have too much or too little of. There are at-home soil testing kits at local garden centers, or they can be found on Amazon.com.
Be sure to keep a close eye out for any pests and diseases too. Spray your plant regularly with neem oil if you being spotting pets. And be sure to pull of tomato worms. You can learn more about tomato worms here, https://www.kellogggarden.com/blog/gardening/tomato-hornworms/.
We also recommend checking out some of these resources, https://www.youtube.com/watch?v=icDaSF2Kf5E, and https://www.kellogggarden.com/blog/gardening/best-fertilizer-for-tomatoes/.
We hope this helps! Let us know if you have any more questions.