Best Indoor Garden Systems: I've Been Testing All Year (2026)

There are many options for grow-light-enabled seed starters on the market, but LetPot's SS-Pro has more features than most and has done well in my testing. It's got a broad (12 x 7 inch) 24-watt light on top to prevent legginess, 40 spaces in the tray for seeds, a sensor for soil temperature and EC (electrical conductivity, which measures dissolved solids—essentially, the amount of nutrients in your soil available to the plants), and a 24-watt heating pad underneath. A plastic lid with adjustable vents on either end sits on top. I tried the system with onion, carrot, and parsnip seeds (note that you will need to provide your own seeds and dirt/substrate), and while the germination rate was more like 70 percent, not 99 percent per LetPot's claims, it was pretty good given the admittedly questionable age and provenance of the seeds.

The SS Pro connects to LetPot's app and can recommend a temperature range and light duration based on what you're growing, maintaining the light schedule and heating pad thermostat accordingly. This isn't required, though, as most of the functions can be adjusted via buttons and a screen on the front, which displays the soil temperature and EC level, as well as days since germination. The power adapter makes a high-pitched sound when the lights are on, the EC sensor only works intermittently, and auto-mode erases whenever it's unplugged, but given how new this system is, bugs are to be expected. If you grow your own starts from seed each year, it's still an option worth considering.

There are multiple sizes of the Rise 3 garden, but all of them follow the same design playbook: A metal frame with a cabinet hiding a water tank, multiple levels of shallow reservoirs, and an LED-light “roof" above each level. I tested the three-level version; each level's reservoir had a lid with varied numbers of pod slots adding up to 48 for the whole system, but you can buy lids with more slots to allow your garden to hold up to 108 plants. The water is pumped from the tank in the bottom cabinet and flows through each level's reservoir. The plant roots just spread out inside the reservoir.

The Rise has far and away the biggest capacity of any non-DIY indoor garden I’ve seen and would be more than enough to keep a large family in nightly salads for months. Overall, it's a pretty traditional form factor—in fact, I'm pretty sure I saw one of these in the corner of my college biology class. Since it's so large, assembly was a bit tricky, and vague instructions weren't helpful. However, Rise does come with a smart plug for the lights and pump, as well as an app that offers reminders on when and how to add water and nutrients and balance the pH.

Unfortunately, I didn't find out until after I had already set it up that the peat pods need to germinate first in plastic-lidded “nurseries.” My test unit didn't come with enough nurseries for the number of seed pods I had, so I had to improvise with shallow plastic containers, with the pods weighted to keep them upright in water. After a few days, I noticed the containers—all of them, including the provided nurseries—had begun to grow algae, and the black-plastic surface of the Rise trays was noticeably warm. I brought out my infrared temperature gun to test—the 195-watt LEDs paired with the black plastic had brought the surface up to 95 degrees Fahrenheit. For reference, all of the other indoor gardening systems were room temperature, in the mid-70s.

Once the plants were grown, the temperature came down to something warmer than “normal” but more reasonable: 83 degrees Fahrenheit. Still, this is something to consider in terms of room placement and what plants might thrive. Over time, I noticed herbs and lettuce bolted faster in the Rise 3 than in other gardens, likely due to this heat, which also puts plants at risk for cases of root rot. I'm still a big fan of the Rise's form factor and its capacity, and I think it would be a first choice for heat-tolerant crops like tomatoes and peppers. In fact, the tomatoes I did grow in the Rise were notably bigger and better tasting than the ones grown in other systems. Also note that, unlike other gardens, the Rise 3's pump runs continuously, resulting in an audible splashing noise—if this bothers you, it may not be the best choice for small spaces.