This is a tough one. Match sticks may not exactly be the problem but it may be a hint: we are thinking that something about the soil is inadequate, is not providing the nutrients the plant needs or allowing it to absorb them. Did you check the pH of the soil? Do you fertilize? Something with not too much nitrogen (the first number in the set of three, e.g. 5-10-5)? Is the plant getting enough water? Containers famously dry out before/quicker than the ground. Is the pot outdoors in the sun?

Still and all, it might be the soil. Don’t want to snow you with info but here’s a list of the “invisible” but so-important nutrients plants need and are often evaluated in soil tests: http://hortipm.tamu.edu/ipmguide/nutrient/diagnosi.html  “Fruit” is not mentioned but once, but as the ultimate product, it could be affected.

Hi Megan,

The two most important factors that can affect growing peppers with thick walls are the days to maturity and the amount of water given. If peppers are not given adequate time to reach full maturity, they will have thin walls: this is especially noticeable in hot regions. Try not to be impatient when waiting to harvest your peppers and it will pay off. As for water, the growth of peppers can be drastically influenced by an inconsistent watering schedule. Peppers like well-draining moist (not wet) soil, so be sure to water pepper plants evenly and consistently, and to water more or less only when temperatures or humidity change drastically, as they will affect the amount of water evaporating into the air. Good luck with your crop of peppers this coming growing season!

Peppers can drop their flowers for a few reasons, including temperatures that are too cool or hot, inadequate pollination, or some other cultural stress, such as too little or too much water, humidity too high or low (which can affect the pollen), soil too rich or nutrient-poor. Sudden changes in temperature, such as what might happen when moving them indoors, can also stress the plants. Some insect pests and diseases can also cause flowers to fall off. Best guess, since your plants seem otherwise healthy, would be that your plants are either just adjusting to their new environment and should eventually recover, or the flowers aren’t receiving enough pollen (peppers are self-pollinating, but wind or insects help the transfer of pollen). Since your plants are indoors, away from wind and insects, you might try gently shaking the plant a tiny bit, to mimic wind, to encourage pollen to fall onto the flower stigmas. Or, you can gently gather pollen onto a cotton swab or small paint brush (just brush the pollen-coated anthers of the flower) and then transfer the pollen to the flower stigma, in the center of each flower. Hope this helps!

If the weather’s been especially hot (which peppers prefer), the peppers may have thought that it was Summer Part II and thus, time to produce more peppers! It’s unlikely that they’ll make it to full maturity at this point in the season, but you could try to give them a couple extra weeks by employing row covers.