Every summer, I end up trying at least one slightly questionable garden trick I find myself thinking about while unloading groceries after work. This time, it was a box of instant chocolate pudding mix sitting on my kitchen counter and a row of tired-looking tomato plants in my backyard in early July. I had heard all kinds of chatter over the years about using pantry items in the garden, and as someone who balances a full-time job with a very sincere attempt at keeping tomatoes alive through Midwest heat, I figured I’d test it in a small, controlled way instead of dumping random stuff all over every bed.
So yes, I buried a small handful of dry instant chocolate pudding mix powder around a few of my July tomato plants and waited 3 weeks to see what would happen. In this article, I’m sharing exactly how I did it, what I noticed above and below the soil, what changed with growth, pests, moisture, and fruit set, and whether I’d ever do it again. If you’ve ever been tempted by a “secret garden hack,” here’s the honest, practical version from someone who actually tried it.
1. Why I tried pudding mix in the first place
By the second week of July, my tomato plants were hitting that awkward point where the early excitement of June had worn off. I had 8 tomato plants total: 4 'Better Boy', 2 'Celebrity', and 2 cherry tomato plants in raised beds along my back fence. We had a stretch of hot weather here in the Midwest, with daytime highs between 88 and 93 degrees, and despite regular watering, a few plants looked a little stalled.
I’d already done the normal things. I had added compost in spring, mulched with about 2 inches of shredded bark, and fertilized lightly with a balanced tomato fertilizer at planting time. Still, 3 plants seemed slower than the others, especially one 'Celebrity' that had pale lower leaves and sparse new growth. The idea behind the pudding mix trick, at least from what I’d heard, was that it might somehow “feed” the soil because it contains sugar, starches, and small amounts of minerals. I was skeptical, but curious enough to test it on just a few plants instead of the whole bed.
2. Exactly how much I used and where I put it
I used instant chocolate pudding mix from a standard 3.9-ounce box. I did not use the whole box on one plant. For each test plant, I used roughly 2 tablespoons to 3 tablespoons of dry mix, which is what I’d call a small handful. I tested it on 3 tomato plants total.
I pulled the mulch back and made a shallow ring around each plant about 5 to 6 inches away from the main stem. The trench was about 1 inch deep. I sprinkled the powder into that ring, covered it back up with soil, and replaced the mulch. Then I watered each plant with about 1 gallon of water to settle everything in. I was careful not to let the powder sit right against the stem because I didn’t want a sticky mess or fungal issues forming at the base.
3. What’s actually in instant chocolate pudding mix
Before I tell you what happened, it helps to look at what I buried. Instant chocolate pudding mix is not fertilizer. On the box I used, the main ingredients were sugar, modified cornstarch, cocoa processed with alkali, and smaller amounts of salt, flavoring, and stabilizers. It was made to thicken milk into dessert, not to feed tomatoes.
That matters because tomato plants need nutrients in usable forms, especially nitrogen, phosphorus, potassium, calcium, and magnesium. A pudding mix might contain tiny trace amounts of some minerals, but not in the ratio or concentration plants need. More importantly, the sugar and starch can feed soil microbes temporarily, which may change activity in the soil, but that is very different from directly nourishing a tomato plant in a reliable way.
4. The first few days: what I noticed right away
For the first 3 to 4 days, I didn’t notice any visible change in the plants themselves. No dramatic greening, no sudden growth spurt, and thankfully no immediate wilting either. The leaves looked basically the same. If you’re hoping for a magical overnight fix, that was absolutely not my experience.
What I did notice was at the soil surface. Even though I had buried the powder and covered it, one area developed a faint sweet smell after watering, especially during the warmer afternoons. It wasn’t overpowering, but it was noticeable when I was tying up vines or checking for hornworms. That alone made me think this was less of a plant treatment and more of an experiment in what might attract other things into the bed.
5. What changed after one week
At the 7-day mark, I compared the 3 treated plants with 3 untreated plants of similar size nearby. The treated plants did not look significantly taller. I keep a basic garden notebook, and my measurements showed about 1 to 1.5 inches of new top growth on the treated plants versus about 1 to 2 inches on the untreated comparison plants. That’s close enough that I’d call it normal variation, not a result.
Leaf color was also mostly unchanged. One treated plant looked a touch greener, but it had also gotten slightly more afternoon shade and happened to be in the part of the bed that stays moist longer. In other words, I couldn’t honestly credit the pudding mix. If anything, the first week told me there was no obvious benefit.
6. What happened in the soil by week two
By the second week, things got more interesting, and not in the way most gardeners would want. When I gently moved the mulch aside to check moisture, the soil around 2 of the treated plants had a slightly clumpy, denser texture compared with the untreated spots. It wasn’t cemented or anything dramatic, but the area where I had buried the powder seemed to hold together more.
I also spotted increased insect activity near one plant. Not a swarm, but definitely more ants than I wanted to see. There were maybe 10 to 15 ants moving through the mulch each time I checked that section, while the untreated side of the bed had very few. Ants don’t necessarily hurt tomato plants directly, but they can be a nuisance, and in some cases they protect aphids. That was my first clear sign that adding a sugary food product to the soil can attract the wrong attention.
7. The 3-week result above ground
After 3 full weeks, the treated tomato plants were not larger, fuller, or more productive than the untreated ones. In fact, the differences were so minor that I’d call the experiment a wash at best. The treated plants had put on about 4 to 6 inches of growth total during that period, while the untreated ones had grown about 5 to 7 inches. Flowering and fruit set were normal for midseason tomatoes, but not improved.
One of the treated plants had 6 medium green tomatoes maturing, and one untreated plant right beside it had 7 tomatoes of similar size. My cherry tomato plant in the untreated section actually outperformed all the treated plants, producing 18 ripe tomatoes in that same stretch. Based on what I saw, the pudding mix did not boost yield, speed up ripening, or improve vigor in any meaningful way.
8. The one thing that did happen: more microbial activity and odor
If I had to point to one real effect, it was that the pudding mix seemed to become food for soil microbes rather than food for the tomato plants. Around day 14 to day 21, the treated spots had a slightly sour-sweet smell when disturbed, especially after heavy watering. That tells me decomposition was happening, but not necessarily in a way that benefited the roots.
In healthy compost systems, microbes breaking down carbon-rich material is great. But in a tomato bed in July, adding processed sugary powder into warm, moist soil can create localized microbial blooms that may temporarily tie up nutrients rather than release them. That’s not ideal when your plants are trying to flower, fruit, and survive 90-degree afternoons.
9. What happened with pests and critters
This was the part that made me stop the experiment for good. Besides the ant activity, I noticed one morning that the mulch had been scratched back around one treated plant. My best guess is that a squirrel, chipmunk, or neighborhood raccoon was nosing around. We get all three in my yard, and they already act like they pay the mortgage.
Nothing destroyed the plant, but the root zone disturbance alone was annoying. Tomatoes really do better when the soil around them stays evenly moist and relatively undisturbed. If a pantry-based “garden trick” increases the odds that animals start digging in your beds, that’s a pretty strong argument against it. Especially in suburbia, where every critter seems to have a schedule.
10. Why tomato plants didn’t really benefit
Tomatoes are heavy feeders, but they need the right nutrients in plant-available forms. During July, mine typically respond best to a fertilizer with moderate nitrogen and higher phosphorus and potassium, plus consistent calcium from healthy soil and even watering. A product made mostly of sugar and cornstarch simply doesn’t meet those needs.
There’s also the issue of balance. Feeding the soil food web is a real concept, but it works best with materials like compost, leaf mold, aged manure, and properly formulated organic amendments. Those bring structure, biology, and nutrients. Pudding mix mostly brings fast-digesting carbohydrates and additives. So while something definitely happened underground, it wasn’t the kind of change that translated into healthier tomatoes.
11. Would it have worked better in compost instead?
Honestly, if I had dumped that same 2 to 3 tablespoons into an active compost pile, I doubt it would have caused much trouble. In a hot compost pile with browns, greens, air flow, and enough bulk material, a little pudding powder would just be another oddball ingredient to break down. Compost systems are much better at buffering weird inputs than a concentrated ring around a plant’s roots.
That said, I still wouldn’t go out of my way to add boxed dessert mix to compost. There are just better options. A shovel of grass clippings, chopped leaves, coffee grounds in moderation, vegetable scraps, or finished compost around the base of a tomato plant will do more good and create fewer headaches.
12. What I would do instead for tired July tomato plants
If your tomatoes look sluggish in midseason, I’ve had much better luck with a few simple fixes. First, check watering. Most in-ground tomato plants need about 1 to 1.5 inches of water per week, and in a hot spell that can mean deep watering 2 to 3 times weekly rather than a light daily sprinkle. I like to water at the base in the morning so leaves stay dry.
Second, side-dress with compost or use a proper tomato fertilizer according to label directions. I’ve had good results with 1 to 2 cups of compost around each mature plant or a measured dose of granular tomato fertilizer scratched lightly into the top inch of soil, then watered in. Third, refresh mulch to a depth of about 2 inches to conserve moisture and reduce stress. Those three steps have made a visible difference in my garden far more reliably than any pantry experiment.
13. A better low-cost feeding routine that fits a busy schedule
Because I work full-time, I need garden care that is realistic on a Tuesday evening when I still have emails to answer and laundry to fold. My practical tomato routine now is simple: deep water on schedule, inspect for pests once or twice a week, prune only what’s necessary for airflow, and feed every 3 to 4 weeks with something actually designed for vegetables.
For cost, this is also more sensible. A good bag of compost might cost $5 to $8, and a tomato fertilizer can last a season if you’re only feeding a backyard patch. Compared with experimenting with random boxed foods that may attract pests and do nothing useful, the proper route ends up being cheaper in the long run because you’re less likely to lose fruit or stress the plants.
14. My final verdict after 3 weeks
So, what happened 3 weeks after I buried a handful of dry instant chocolate pudding mix around my July tomato plants? Not much good for the tomatoes, and a few mildly annoying things for me. I did not get bigger plants, more tomatoes, or greener foliage. What I did get was more ant activity, a little animal digging, and enough odd soil smell to convince me this belongs in the kitchen, not the vegetable bed.
If you’re tempted to try this trick, I’d skip it. Tomatoes are generous plants when you give them the basics: sun, steady moisture, mulch, support, and real nutrients. I’m all for experimenting in the garden, and I’ll probably always be the person who tries one odd idea just to see. But this one goes firmly into my “tested it so you don’t have to” category.