Vegetables You Can Grow With Tomato Crater®

By Kevin Cody | Founder & CEO, FLI Products / Mary Joan Isorena, Communications
Published: September 22, 2026

Tomato Crater® isn't only for tomatoes. Its root-zone watering design can also be used with peppers, cucumbers, squash, zucchini, beans, eggplant, melons and other compatible garden plants—but each crop has its own growth pattern, root environment and watering needs.

That last part matters.

Seeing the word “Tomato” on the product can make it easy to assume Tomato Crater has only one job.

But the gardening principle behind the product is much broader:

Plants need access to appropriate moisture within their root zones.

That principle applies throughout a vegetable garden.

It does not, however, mean that every vegetable should receive exactly the same amount of water, on the same schedule, throughout the entire growing season.

Understanding that difference is what turns Tomato Crater from a tomato-specific idea into a more useful garden watering tool.

Visit the Tomato Crater Hub for more root-zone watering, tomato-growing, and garden-care guidance.

Key Takeaways

• Tomato Crater® is designed for tomatoes and other compatible garden vegetables.

• Current FLI Products guidance identifies peppers, cucumbers, squash, zucchini, beans, eggplant and melons among its applications.

• Different vegetables have different root systems, growth habits and critical periods for moisture.

• Flowering, fruit set and fruit development are particularly important moisture periods for many fruiting vegetables.

• Using Tomato Crater does not mean every crop should receive the same watering schedule.

• Soil type, rainfall, temperature, plant growth stage and existing soil moisture should influence watering decisions.

• Tomato Crater can be used in compatible in-ground gardens, raised beds and containers.

• Root-zone watering is a gardening principle; Tomato Crater is a tool for helping gardeners apply that principle.
  

Why Isn't Tomato Crater Only for Tomatoes?

Tomato Crater was designed around the plant's root zone.

That concept isn't exclusive to tomatoes.

Every vegetable depends on its root system for access to water and mineral nutrients.

As we explained in our guide to what the root zone is, the effective root zone is the portion of soil from which a plant obtains much of its water.

That means the useful question isn't simply:

“Is this a tomato?”

It is:

“Can this plant and growing setup appropriately use a root-zone watering reservoir around its base?”

The current Tomato Crater® Root-Zone Watering System is identified by FLI Products for use with:

• tomatoes

• peppers

• cucumbers

• squash

• zucchini

• beans

• eggplant

• melons

• other compatible garden vegetables

That opens considerably more possibilities than the product name might initially suggest.

But before putting Tomato Craters throughout the garden, there is another important concept to understand.

Same Watering Principle, Different Plants

Root-zone watering is a method of water placement.

It is not a universal watering prescription.

This distinction is essential.

A pepper plant and a cucumber plant both need water in their root zones.

That doesn't mean:

pepper watering = cucumber watering.

Plants differ in:

• rooting characteristics

• growth rate

• mature size

• canopy development

• flowering patterns

• fruit development

• sensitivity to moisture stress

• growing season

• environmental requirements

Even two plants of the same crop may need different watering management when they're growing in different soils or climates.

This is why authoritative gardening guidance rarely gives one irrigation schedule that works everywhere.

The Most Important Watering Period Can Change With the Crop

One of the most useful lessons for vegetable gardeners comes from understanding critical growth periods.

Plants need adequate moisture throughout development, but certain stages can be particularly sensitive to water stress.

According to University of Minnesota Extension's vegetable irrigation guidance, critical irrigation periods for many flowering vegetable crops occur during flowering and fruit or pod development.

Its guidance identifies:

• cucumber, eggplant, pepper, melon and tomato — flowering, fruit set and maturation

• beans and peas — flowering, fruit set and development

That gives gardeners a much more useful framework than simply saying:

“Water every vegetable the same way every week.”

Your plant's stage of development matters.

Now let's look at some of the plants FLI identifies for Tomato Crater individually.

1. Peppers

Peppers are one of the most natural Tomato Crater applications beyond tomatoes.

Like tomatoes, peppers are warm-season fruiting vegetables.

Their watering requirements are particularly important as the plants move into flowering, fruit set and fruit development.

University of Minnesota Extension identifies flowering, fruit set and maturation as critical periods for irrigation in peppers.

That doesn't mean peppers only need water during those stages.

It means moisture stress during those periods deserves particular attention.

Where Tomato Crater fits

A Tomato Crater installed around a compatible pepper plant provides a reservoir for directing applied water toward the root-zone area.

The gardener still needs to determine whether watering is necessary based on:

• soil moisture

• rainfall

• temperature

• plant development

• container or bed conditions

The Tomato Crater manages placement.

The gardener manages timing and amount.

2. Cucumbers

Cucumbers present a different garden structure.

Rather than developing like an upright tomato or pepper plant, cucumbers typically produce spreading or climbing vines.

Their above-ground growth may look very different, but they still depend on soil moisture available to their roots.

University of Minnesota Extension identifies flowering, fruit set and maturation as particularly important irrigation periods for cucumbers.

That makes consistent attention to the root zone important as plants transition from vegetative growth into cucumber production.

Where Tomato Crater fits

Tomato Crater can be positioned around a compatible cucumber plant to help direct applied water toward the soil around its root zone.

The vines can then grow outward or be managed according to the gardener's chosen support system.

This illustrates an important point:

Tomato Crater manages the area around the roots—not the shape of the plant above ground.

3. Squash

Squash plants can quickly become some of the largest plants in a vegetable garden.

Their broad leaves can cover significant areas of soil, making the original plant base less obvious later in the season.

That is another reason planning the root-zone watering location early can be useful.

Where Tomato Crater fits

FLI Products currently identifies squash among the garden vegetables compatible with Tomato Crater.

The reservoir remains positioned around the plant base while the canopy expands outward.

Gardeners should still monitor the soil because a large, actively growing squash plant can interact with its soil-water environment very differently from a small transplant.

The presence of Tomato Crater doesn't eliminate the need to observe changing plant demand.

4. Zucchini

Zucchini is a type of summer squash, but it deserves its own mention because it is so common in home vegetable gardens.

A young zucchini transplant occupies relatively little space.

A mature zucchini plant can become broad and dense.

Throughout that change, its roots remain responsible for obtaining water from the surrounding soil.

Where Tomato Crater fits

Tomato Crater can remain around the base of a compatible zucchini plant while foliage develops outward.

This can make the watering location easier to identify even after the plant becomes large.

But once again:

A visible watering reservoir does not tell you automatically whether the soil needs more water.

Check the root-zone conditions before irrigating.

5. Eggplant

Eggplants share several characteristics with tomatoes and peppers.

They are warm-season, fruit-producing plants, and adequate moisture becomes particularly important during reproductive growth.

University of Minnesota Extension identifies flowering, fruit set and maturation as critical irrigation periods for eggplant.

That doesn't justify a rigid watering schedule.

Instead, it tells gardeners when moisture stress deserves especially careful attention.

Where Tomato Crater fits

FLI Products identifies eggplant as a Tomato Crater application.

Using the reservoir around the plant base can help gardeners focus applied irrigation on the root-zone area while keeping watering decisions responsive to actual soil and weather conditions.

6. Melons

Melons show especially clearly why “compatible with Tomato Crater” should never be interpreted as “water exactly like tomatoes.”

Melons have their own growth habit, developmental stages and moisture requirements.

They typically produce long vines that extend well beyond the original planting location.

Yet the root system begins around the original plant base.

University of Minnesota Extension identifies flowering, fruit set and maturation as critical periods for melon irrigation.

Where Tomato Crater fits

For compatible melon plantings, Tomato Crater can provide a defined watering reservoir around the plant base while the vines spread beyond it.

This allows the gardener to keep the irrigation point associated with the plant's original root-zone area rather than attempting to water along the entire vine.

7. Beans

Beans are particularly useful for demonstrating why gardeners need to think beyond the product name.

They don't look like tomato plants.

Depending on the type, they may grow as compact bush plants or climbing vines.

But beans still depend on root-zone moisture.

University of Minnesota Extension identifies flowering, fruit set and pod development as critical irrigation periods for beans.

Where Tomato Crater fits

FLI Products currently includes beans among Tomato Crater's garden applications.

Whether the setup makes sense for an individual bean planting will depend partly on spacing and how the gardener has arranged the crop.

A Tomato Crater surrounds an individual planting area.

Beans grown very closely together in rows may therefore call for a different irrigation layout than individually spaced vegetable plants.

This is an important example of choosing a watering tool based on how the garden is actually planted, not simply whether a crop appears on a compatibility list.

What About Other Plants?

The current FLI product information also refers more broadly to compatible garden vegetables.

But that does not mean we should automatically claim that Tomato Crater is ideal for every plant.

Instead, gardeners should ask several practical questions.

Is the plant individually spaced?

Tomato Crater naturally lends itself to plants with a defined planting location around which the two-piece reservoir can be positioned.

Is there enough room around the plant?

Plant spacing still needs to follow appropriate gardening recommendations.

Does root-zone watering make sense for the crop?

A plant may benefit from appropriately managed root-zone moisture while still requiring very different irrigation frequency or amounts from tomatoes.

Does the plant's growth habit work with the system?

Vining plants, upright plants and bush plants occupy garden space differently.

Is the Tomato Crater physically compatible with the planting setup?

The system should fit naturally around the plant without compromising appropriate spacing or normal plant development.

These questions are more useful than assuming:

“If it's a vegetable, put a Tomato Crater around it.”

What About Root Vegetables?

This is where understanding the category becomes more important than promoting the product.

Carrots, radishes, beets and turnips have different crop structures from tomatoes, peppers and cucumbers.

University of Minnesota Extension identifies root enlargement as the critical irrigation period for these root-forming crops.

Their edible product develops within the soil itself.

That doesn't mean root-zone watering as a general principle becomes irrelevant.

It means the garden layout, crop spacing and irrigation method need to match the crop.

Tomato Crater is primarily suited to compatible individually positioned garden plants rather than being presented as a universal irrigation system for every vegetable category.

Choosing the right method is more important than forcing one tool into every situation.

Can Tomato Crater Be Used in Raised Beds?

Yes.

FLI Products currently identifies Tomato Crater for raised-bed vegetable gardens.

But raised beds introduce another variable.

The soil or growing medium inside a raised bed may differ substantially from the native soil surrounding it.

Drainage can differ.

Temperature can differ.

Moisture can change at a different rate.

That means the same Tomato Crater used around the same crop could require different watering management in:

an in-ground garden vs. a raised bed.

The product helps determine where applied water enters the soil.

The growing environment helps determine how frequently additional water may be needed.

Can Tomato Crater Be Used With Potted Plants?

FLI Products currently identifies Tomato Crater for compatible container and patio gardening.

Containers make root-zone management particularly interesting because the plant's entire root environment is confined.

Unlike an in-ground garden, roots cannot continue expanding indefinitely into surrounding soil.

Container size, drainage, growing medium, sunlight and weather can all affect how quickly that limited soil volume changes.

A container may therefore dry differently from nearby garden soil.

This makes one principle especially important:

Never assume that a Tomato Crater in a container should receive the same watering schedule as one in an in-ground garden.

Observe the container itself.

One Garden Can Contain Many Different Root Zones

Picture a typical summer vegetable garden.

You might have:

• tomatoes growing vertically in cages

• peppers standing independently

• cucumbers climbing a trellis

• zucchini spreading across the bed

• eggplants producing fruit on upright stems

• melons vining along the ground

• beans growing along another support

From above ground, those plants look completely different.

Below ground, they share one fundamental need:

access to appropriate soil moisture through their roots.

But how each crop uses its root environment—and when moisture becomes particularly critical—can differ.

That is why the goal shouldn't be to create one watering schedule for the entire garden.

The goal is to understand each crop well enough to manage its root zone appropriately.

How Rainfall Changes the Equation

Rain doesn't care which plants have Tomato Craters.

When rain falls across the garden, it contributes water to the soil reservoir.

That means supplemental irrigation should never be considered completely separately from rainfall.

A week with substantial rain may require a very different irrigation decision from a hot, dry week.

And because rainfall can vary significantly even within a region, the amount recorded at a distant weather station may not exactly match what fell in your backyard.

Gardeners who want to track actual rainfall at their property can use a manual rain gauge such as the Stratus® Precision Rain Gauge and combine that information with observations of soil moisture and plant conditions.

The objective isn't to automatically replace every measured inch of rainfall with an identical amount of irrigation.

It's to understand another important part of the garden's water balance before deciding whether supplemental watering is necessary.

Build a Crop-by-Crop Watering Routine

Instead of asking:

“How often should I fill every Tomato Crater?”

use a more useful process.

Identify the crop

Know what you're growing and learn its general moisture requirements from reliable gardening resources.

Identify the growth stage

A new transplant, flowering plant and heavily fruiting mature plant are not necessarily experiencing the same water demand.

Check the soil

Don't rely only on surface appearance.

Account for rainfall

Natural precipitation contributes to root-zone moisture.

Consider the weather

Heat, wind, humidity and sunlight can influence water loss.

Consider the growing environment

In-ground gardens, raised beds and containers can behave differently.

Then irrigate as needed

Tomato Crater provides the watering location.

Your garden conditions determine the watering decision.

Tomato Crater Is a Garden Tool, Not a Universal Watering Formula

This may be the most important lesson in expanding Tomato Crater beyond tomatoes.

The product does not make tomatoes, peppers, cucumbers, squash, zucchini, beans, eggplants and melons behave identically.

It gives gardeners a consistent method for directing applied water toward the root-zone area of compatible plants.

That distinction makes Tomato Crater more useful—not less.

It means gardeners can combine one practical watering tool with crop-specific knowledge.

Explore the Tomato Crater® Root-Zone Watering System

Frequently Asked Questions

Is Tomato Crater only for tomato plants?

No. FLI Products currently identifies Tomato Crater for tomatoes as well as peppers, cucumbers, squash, zucchini, beans, eggplant, melons and other compatible garden vegetables.

Can I use Tomato Crater with pepper plants?

Yes. Peppers are specifically listed by FLI Products as a Tomato Crater application. Their watering needs should still be managed according to soil moisture, weather, rainfall and growth stage.

Can Tomato Crater be used with cucumbers?

Yes. Tomato Crater can be used around compatible cucumber plants to direct applied water toward the root-zone area while the vines grow outward or along a support.

Can I use Tomato Crater for zucchini?

Yes. Zucchini is specifically identified by FLI Products as a compatible application.

Can I use Tomato Crater for squash?

Yes. FLI Products identifies squash among Tomato Crater's applications. Gardeners should account for the plant's expanding size and changing water needs as it develops.

Can Tomato Crater be used with eggplant?

Yes. Eggplant is included among Tomato Crater's current applications. University of Minnesota Extension identifies flowering, fruit set and maturation as particularly important irrigation periods for eggplant.

Can I use Tomato Crater with melons?

Yes. FLI Products identifies melons as a Tomato Crater application. Their vining growth habit and crop-specific moisture needs should still be considered.

Can Tomato Crater be used for beans?

Yes. Beans are included in FLI Products' current application list. Whether Tomato Crater is practical for a particular bean planting can depend on spacing and whether the plants are individually positioned or closely planted in rows.

Should I give every plant the same amount of water through Tomato Crater?

No. Using the same watering tool does not make different crops' water requirements identical. Crop, growth stage, soil, rainfall, weather and growing environment should guide irrigation decisions.

Can Tomato Crater be used in raised beds?

Yes. FLI Products identifies raised-bed vegetable gardens as a Tomato Crater application. Raised-bed soil may behave differently from surrounding native soil, so moisture should still be monitored.

Can Tomato Crater be used in containers?

Yes. FLI Products identifies compatible container and patio gardening as an application. Container size, growing medium, drainage, weather and plant size can influence how quickly the root zone dries.

Does Tomato Crater replace other good gardening practices?

No. Appropriate planting, spacing, soil management, crop support, rainfall awareness and observation of plant and soil conditions remain important.

Think Beyond the Tomato

The name Tomato Crater® tells you where the product began.

Understanding the root zone shows you why the idea can go further.

Peppers don't grow exactly like tomatoes.

Cucumbers don't grow exactly like peppers.

Melons don't grow exactly like cucumbers.

And beans introduce another completely different garden structure.

Yet each crop depends on roots interacting with water, soil, temperature and nutrients below the surface.

That's the bigger gardening lesson.

Don't force every plant into the same watering schedule.

Understand the crop. Understand its root zone. Observe your conditions. Then put water where it can be useful.

Tomato Crater® provides a simple, reusable way to direct applied water toward the root-zone area of compatible garden plants—whether you're growing tomatoes or building a much more diverse vegetable garden.

Explore Tomato Crater® at FLI Products

About Kevin Cody

Kevin Cody | Founder & CEO, FLI Products

Kevin Cody is the Founder and CEO of FLI Products and a product development, merchandising and retail industry veteran with more than 20 years of experience. His background includes merchandising leadership at The Home Depot as well as developing, sourcing, manufacturing, marketing and bringing consumer products to market through major retailers and online marketplaces.

Kevin works directly with manufacturers, inventors, retailers and consumers to develop practical products that solve everyday problems. His experience spans product design and development, retail merchandising, manufacturing, e-commerce, marketplace strategy and consumer product education.

Through the FLI Products Learning Center, Kevin shares practical, experience-based information designed to help consumers better understand products, solve problems and make informed purchasing decisions.

Read Full Bio

About FLI Products

FLI Products develops and markets practical consumer products designed to solve everyday problems at home, outdoors and on the job. Working directly with manufacturers, inventors and retailers, FLI Products focuses on thoughtful product design, practical functionality and useful solutions for consumers. Its products are available through FLIProducts.com and select major retailers and online marketplaces.

About FLI Products

Sources & Resources

University of Minnesota Extension — Irrigation Strategies for Vegetables
Research-based guidance on vegetable irrigation and crop-specific critical moisture periods, including tomatoes, peppers, cucumbers, eggplant, melons and beans.

University of Minnesota Extension — Crop and Field Planning Tools for Vegetable Farmers
University Extension crop-planning information covering vegetables including cucumbers, eggplant, melons and peppers.

FLI Products — Tomato Crater® Root-Zone Watering System
Official FLI Products source for current Tomato Crater design, material, compatible vegetables, raised-bed and container applications, cage compatibility, reusable construction and Made in USA status.

FLI Products — Stratus® Precision Rain Gauge
Official FLI Products information for the Stratus Precision Rain Gauge referenced for measuring rainfall at the garden site.

Visit the Tomato Crater Hub for more root-zone watering, tomato-growing, and garden-care guidance.