This depends on the variety, the way it is grown or the type of feeding given.
Orchids have strong stems.
weak stem
Any grass plant would have weak stems because they are not woody. However, "cow grass" does not exist rendering this question moot.
The stems and leaves are mildly toxic to humans and will cause gastric distress.
No
herbs are very small plants with soft,thin and weak stems.
it is weak and strong because it neutralises acids. So its strong not weak but weak not strong.
Balsam plants typically have weak stems that can be easily damaged or bent. These stems are often soft and succulent, which can make them susceptible to breakage under heavy rain or wind. Proper support may be needed to help them grow upright, especially in windy conditions.
Sunflower and rose plants have woody and strong stems)
Yes, climbing ferns typically have weak, twining stems that require support to climb. These stems are adapted to wrap around tree trunks or other structures for stability as the fern grows upward.
weak is not strong
antonym comes from the greek, anti, meaning opposite, so the opposite of weak is strong.