'Plant' in the Bible

"Every plant," He replied, "which my Heavenly Father has not planted will be rooted up.

"If your faith," replied the Lord, "is like a mustard seed, you might command this black-mulberry-tree, 'Tear up your roots and plant yourself in the sea,' and instantly it would obey you.

and as for what you sow, it is not the plant which is to be that you are sowing, but a bare grain, of wheat (it may be)