This is one question many have a tough time finding a good answer to.
Knowing the dimensions of the tomato plant would enable you choose a comfortable sized bag for it.
The planting depth of tomatoes is usually 1-2’ and they have a depth (root growth) of 6-8”, bringing the total height for consideration to 10-12’.
Read our review of the best grow bags to see the dimensions of the different sizes of grow bags and their dimensions. If you’re planting potatoes, see this.
From there, you’d see that a 5 gallon or 7 gallons sized grow bag would be suitable for growing one tomato plant.
If you want to grow several tomato plants and don’t want to buy ‘too much’ smaller sized grow bags, you could choose to use the grow bags that look like sacks and come ready with soil.
You could use the larger sizes to grow an amount of two to three tomato plants, while taking into consideration the spacing required by your tomato plant.
Don’t be afraid to try planting in grow bags larger than what is necessary for growing tomatoes.
However, the bag shouldn’t be unnecessarily large unless you want to grow several tomatoes at once like in a really small patch of land.
The same goes for other smaller plants.
Be willing to spend on buying quality grow bags. After all, they don’t cost much and many of them are reusable as long as you wash after use and store them properly.
A little tip…
Consider the height, width, and spacing. Buy a grow bag that’s larger than the dimensions by 5 or 6 inches, to ensure that your plants are not cramped, but are ‘grow-fortable‘.
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Hello! I’m Jessica Zander, a garden coach and consultant based in the Boston area (zone 6b), offering virtual consultations across the country and Canada.
I’ve been passionate about gardening since the early 1990s, and in 2022, I launched You Can Do It Gardening to empower individuals to feel more confident in their gardening endeavors.
Following a 30-year career in nonprofit finance and operations, I transitioned out of that field in mid-June of 2023 due to the growing demand for coaching services. Interestingly, my years of presenting financial statements to boards and finance committees proved to be valuable experience for teaching people about gardening! I enjoy sharing skills, providing guidance and suggestions, and collaborating efficiently with clients to make significant improvements to their outdoor spaces, both small and large. I also regularly teach at the Arlington Continuing Education and Cambridge Adult Education.
My approach is direct and practical, akin to Mary Poppins, but tailored to your garden. Clients find satisfaction in saving money and taking pride in their own gardening achievements.
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