Possible Clues:

• Tall stalker following our star
• Source of oil that Van Gogh used to paint
• Source of oil seen in Van Gogh's art
• Van Gogh subject
• Big bloom
• Bloom with seeds that follow the Fibonacci sequence
• Source of oil that's seen in Van Gogh's paintings
• Paper circulation on hospital ward is blooming high
• Large yellow bloom
• Summer plant beginning to fade, during sign of winter's approach