茂る【しげる】
to grow thickly, to be in full leaf, to be rampant, to luxuriate, to be luxurious
繁茂【はんも】
luxuriant growth, rankness (of weeds)
生い茂る【おいしげる】
to grow thickly, to be overgrown, to thrive, to grow in abundance
茂み【しげみ】
thicket, bush, coppice, brushwood