Which ornamental peppers are not edible?

It's important to note that ALL ornamental peppers are technically edible, but not all of them are desirable to eat. This is due to a couple of reasons:

* Taste: Many ornamental peppers are bred for their appearance, not their taste. They can be extremely spicy, bitter, or simply bland.

* Toxicity: Some ornamental peppers contain capsaicinoids in such high concentrations that they can cause severe irritation and discomfort if consumed.

Here are some ornamental pepper varieties known for their intense spiciness or potential for causing discomfort:

* 'Black Pearl' Pepper: Known for its intense heat and can cause burning and irritation.

* 'Purple Flash' Pepper: While edible, the heat is extremely high, making it unpleasant for most to consume.

* 'Chili Pepper Tree' (Capsicum frutescens): This variety produces tiny, intensely hot peppers that can cause a burning sensation.

It's always best to exercise caution and research the specific variety of ornamental pepper before attempting to eat it. If you are unsure, it's best to avoid eating them entirely.

Remember, ornamental peppers are primarily for decorative purposes, not culinary use.