Indeed. Actually, before this posts didn't even knew what Alfalfa is, so had to look it up. The clover is mostly used by farmers outdoor to get some N back into the soil. Not really helpful indoors....
I've experimented with some "companion plants" by myself, just for jolly. The best so far I've found is
en.wikipedia.org
it needs very little fertilizer, stays very low (kinda creeps), grows very tight (so it totally covers the soil) and it can be eaten - it's actually high in Vitamin C, a simple good addition to any salat or so... it also tastes not bad, not bitter at all.
But there are many other interesting plants for this, too, some even bringing growth steroids to the table, like this one
en.wikipedia.org
it contains huge amounts of
en.wikipedia.org
give it a try if you are out to maximize harvest weight, it's very potent. but it's not everywhere officially approved
Die Wirkung von Pechnelken Extrakt basiert auf einem Extrakt aus speziell angebauten Pflanzen, deren Wirkung durch jahrelange Forschung untersucht wurde. Nur gesunde und vitale Pflanzen können quantitativ und qualitativ höhere Erträge erzielen.
www.ebay.de
and can be composted or extracted and it'll boost plant growth & health tremendously (much better than simple hormones - these steroids actually BOOST other hormones - and they are found everywhere in plants, because its not a single steroid but a whole class of about 100 compounds).
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