Yes, Cleome is well-known for self-seeding generously. Once you plant them, volunteer seedlings will likely pop up in the exact same spot year after year. If you want to limit self-seeding, simply deadhead spent flower heads before they form slender seed pods.

While not strictly required, exposing Cleome seeds to temperature fluctuations can improve germination rates. Storing seeds in the refrigerator for 1–2 weeks prior to sowing or subjecting planted seeds to warm days and cooler nights mimics natural conditions and helps break seed dormancy faster.

Yes, Cleome plants feature slightly sticky foliage and a unique musky aroma, along with tiny spines along the stems. These natural defenses make them exceptionally unpalatable to deer, rabbits, and other common garden pests.

Cleome drops its lower flowers naturally as the stalk continues to grow upward, creating long, narrow seed pods beneath the active blooms. If whole blossoms are falling off without producing pods, ensure the plants receive adequate sunlight and avoid overwatering or applying excessive high-nitrogen fertilizer.