You can accumulate the cabbages you collect everyday if you don't use the 3 free on the first day.
Start with your 3 free. Don't use them.
Now collect from your cabbage hut. You should have 4 now. Don't use them.
The next day collect from the cabbage hut gain. You should now have 5. Don't use them.
Continue each day collecting from the cabbage hut without using any until you have the amount you want or need to hit all 25 spots.