Cosmos Flowers

Tallest Cosmos?


tlv571 added on October 11, 2015 | Answered

I have two cosmos in my yard that are probably about 13 ft tall. When I try to search to see how tall they get, the tallest I have found is 6 ft. The seed packet said they would get to be 3-4 ft tall; however, these are about 13 ft!! Have you ever heard of this?


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ANSWERS
Downtoearthdigs
Certified GKH Gardening Expert
Answered on October 13, 2015

It is not unusual to get very tall Cosmos, they can reach 6 to 8 feet, so if they are quite happy and have a nice long growing season, 13 feet seems doable.

Perhaps you want to save the seeds of your tallest plants to grow them again.

I grow Cosmos in my garden and I do find that the first year they stay smaller and with each year of self seeding they get taller.

https://www.gardeningknowhow.com/ornamental/flowers/cosmos/growing-cosmos.htm

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