Table 3.

Nonterpenoidial-rich EOs derived from plants and with significant phytotoxic activity.

Plant Name	Main Components	Major Compounds	Phytotoxic Against	Reference
Nepeta nuda	Iridoids	4a-α,7-α,7a-β-nepetalactone, 2(1h)-naphthalenone, and octahydro-8a-methyl-trans-	Triticum aestivum, Raphanus sativus, Lactuca sativa, Lepidium sativum, and Portulaca oleracea *	[60]
Nepeta cataria	Iridoids	4a-α,7-α,7a-β-nepetalactone and 4a-α,7-β,7a-α-nepetalactone	Hordeum spontaneum *, Taraxacum officinale *, Avena fatua *, and Lipidium sativum	[59]
Nepeta meyeri	Iridoids	4a-α,7-α,7a-β-nepetalactone and 4a-α,7-β,7a-α-nepetalactone	Amaranthus retroflexus *, Bromus danthoniae *, Bromus intermedius *, Chenopodium album *, Cynodon dactylon *, Lactuca serriola *, Portulaca oleracea *, Cirsium arvense *, and Sinapsis arvensis *	[57,58]
Ecballium elaterium	Phenolics and hydrocarbons	e-anethol, octyl octanoate, 3-(6,6-dimethyl-5-oxohept-2-enyl)-cyclohexanone, and tetracosane	Lactuca sativa	[56]
Pimpinella anisum	Non-terpenoidial phenols	cis-anethole	Raphanus sativus, Lactuca sativa, and Lepidium sativum	[40]
Foeniculum vulgare	Non-terpenoidial phenols	cis-anethole

* Reported as a weed.