Assertion: swiss chard's leaf | /r/CapableOf | become tough
Facets:
Source sentences:
text: Once the plant produces a seed stalk (usually late summer), the leaves will become tough.
text: Leaves become tough as they age, so cut plants back to between 3 and 5 inches tall to encourage tender new growth.
text: Once the plant produces a seed stalk (usually late summer), the leaves will become tough.