intransitive. Of a plant or its parts: To increase gradually in size and vigour; to develop, sprout (up). Obsolete exc. dialect †Also, to grow in a…

In weaker sense: To have vegetative life; to undergo the process of development characteristic of living plants. Hence also, to exist as a living…

intransitive. Of a plant: to start growing vigorously or well.

to grow up v. Of plants: To emerge from the soil, spring up; also, to grow to full size.

Of living bodies generally: To increase gradually in size by natural development. (In Old English said… of plants. Also to grow away, to develop…