How To Keep Cleome Blooming. Deadheading will prolong the blooming period. 2 Choose the right location.
Space 1 to 2 feet apart in groups of 5 or more. 10062021 Directly sowing the seeds outdoors is actually recommended for cleome plants. 15052021 Alternatively you can start Cleome hassleriana indoors 6 weeks before the last average frost date.
Plants do not require staking at any point in their lifespan.
Flowering June to October. 10062021 Directly sowing the seeds outdoors is actually recommended for cleome plants. You can also use a water soluble fertilizer sprayed directly on the plants foliage once every other week. This process takes around 2 weeks.