The key to this level again is cascading crops. Don't touch the right side of the board if you can help it, until the spider has moved from his first nest. The reason being, the less free crops, the less crops he can web.
You need crops to cascade, or at least line up well against as many flowers as you can, to open as many as you can in each move.
Once the spider has moved, concentrate on moving him from his current web until he has gone.
While at the same time building your crops and flower gathering numbers.
Use shovels to drop crops so that you get a better row as it will save a move.
+5 rows will go a long way to completing this level too.