What does the poem "Good years must be remembered, just as oranges grow green" mean?

It means: don't think that a good year will run out. You must remember that the most beautiful scenery is in the orange, yellow and green season in early winter!

original text

{For Liu Jingwen}

Lotus didn't shelter from the rain,

There are branches of Ao Shuang in the chrysanthemum.

Good years must be remembered,

When it is orange, orange and green.

I hope you are satisfied!