Possible Clues:

• Woodland plant with yellow flowers in spring
• Writing about border plant
• Sit for a painter taking in the border with the ultimate sunflower - a typically yellow flower
• Prudish woman makes bloomer
• Basic writing pens bound to be yellow
• Flower border captured in writing
• Spring flower initially planted in front of border came up
• Flower in formal lines, we hear
• Text about border plant
• Writing round border in yellow