We looked at which items resonated most with our readers last September and want to share what we found. That way, you'll know about the best items to list in September 2021 — and which products are better to list during a different month.

What do garden products, grilling items, and groceries have in common? They're all things you might want to sell come September!

We looked at which items resonated most with our readers last September and want to share what we found, so you'll know what's worth listing in September 2021 — and which products are better to list during a different month.

The first thing we recommend selling in September is garden, lawn, and grilling products.

September is a sweet spot in some parts of the U.S.; it's still warm enough to spend time outdoors, but the temperatures don't get overwhelmingly high. That makes it an ideal time for listing grilling, lawn, and garden products. Among the items DealNews readers gravitated toward last September were sprinklers that rotate 360 degrees; grass-care products like a combination mulch, seed, and fertilizer; 50-foot garden hoses; garden hose spray nozzles; and rainwater collection systems. As for grilling supplies? Readers went for grill mats and barbecue smoking chips.

Next on our September selling list is headphones.

Who doesn't need a pair of headphones these days, whether to tune out noise during the workday, make phone calls, or listen to music during workouts? Consider listing wired on-ear headphones, Bluetooth 5-point-0 wireless earbuds with charging cases, Apple AirPods Pro, and even Bluetooth sleeping headphones. These audio products trended with our readers last September.

Another tech-related product that could be good to sell in September is computer accessories.

In September 2020, popular items included USB WiFi adapters, 3-packs of USB-C to USB-A charging cables, 1080p webcams with microphones, and audio-video capture cards.

Grocery items may also be worth selling in September.

Many consumers did their grocery shopping online during the pandemic, and you don't have to worry about all of them going back to in-store shopping. According to a recent study by Coresight Research, about "60 percent of online grocery shoppers plan to buy groceries online more frequently or at the same frequency as during the crisis."

So which grocery items are worth selling this September? Last year, items that resonated with our readers ranged from instant-coffee packets and variety packs of Doritos chips, to containers of popcorn kernels, squeeze bottles of honey, and packs of s'mores-flavored granola bars.

The final category on our list of things to sell is clothes and accessories.

Are you hoping to sell apparel and accessories in September? Then you may want to go with men's basics and sporty brands. Last September, popular items with DealNews readers included 5-packs of boxer briefs in assorted colors, 5-packs of men's crew T-shirts, leather bifold wallets, Reebok shoes and apparel, and Under Armour apparel.

Sometimes knowing what's not worth selling during a given month is just as important as knowing what is. So let's spend some time talking about what you might not want to list online in September 2021.

One item that may be more popular among our readers in future months is kitchen products.

Wait until October and beyond, and you may have better luck selling kitchen items. In October 2020, 7-inch cleavers and 2-point-5-cup measuring cups were trending; in November 2020, electric kettles and garlic presses were popular.

Next up are toys, which we recommend selling in November, December, and April.

Consider waiting till the holiday season to list kids' toys — or even until next spring. During those months, readers have gone for items like card games, LEGO sets, toy cars, portable gaming consoles, and Nerf blasters.

Another category that could bring you success during the springtime is health-related and personal care appliances.

Consider selling these in March. Items that were popular in March 2021 included electric razors, blood pressure monitors, toothbrushes, massage guns, and back-stretching devices.

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