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Is my Juniper a male or female? #856340

Asked December 13, 2023, 2:32 PM EST

Is my Juniper a male or female?

Hennepin County Minnesota

Expert Response

Thanks for the question.

The common juniper (Juniperus communis) typically has separate male and female plants. In botanical parlance, common juniper is said to be dioecious. In order to identify male and female plants, you need to look at the reproductive structures.

Female juniper plants produce seed cones, which are often referred to as "berry-like cones" because they resemble small, fleshy berries. These cones usually take about a year to mature and are typically green when young, turning a bluish-black color as they ripen. In one of your pictures, blue berry-like structures are seen. This particular picture, then, is showing a female plant.

On the other hand, male juniper plants produce pollen cones, which are smaller and less conspicuous than the female cones. From these cones pollen is released into the air and pollinates seed cones on female plants.

Here is further information on these and related points:

https://www.minnesotawildflowers.info/shrub/common-juniper

https://herbaria.plants.ox.ac.uk/bol/plants400/Profiles/IJ/Juniperus - :~:text=Common juniper has separate male,a waxy bloom, on maturity.

https://www.woodlandtrust.org.uk/trees-woods-and-wildlife/british-trees/a-z-of-british-trees/juniper/ - :~:text=Common juniper is dioecious, meaning,near the tips of twigs.

https://www.first-nature.com/trees/juniperus-communis.php

Thanks for using our forum. Please get back to us with any further, related questions.

An Ask Extension Expert Replied December 13, 2023, 6:01 PM EST
Thank you for this information. 
One thing though.... Are we certain it IS a juniper and not a cedar? 
I sent in a previous question as to whether it is a cedar or juniper and just wanted to be sure.
Thank you. 



On Wed, Dec 13, 2023 at 5:01 PM Ask Extension <<personal data hidden>> wrote:
The Question Asker Replied December 13, 2023, 6:36 PM EST

Thanks for your response. I understand your latest question, but since it was not part of what I initially  received from you, I did not address this point.  Your question about whether this is a juniper or a cedar was directed to a different master gardener. I have contacted this second master gardener about my answer to you. That master gardener will be responding to you regarding the actual identity of your plant. 
Thanks again for using our forum. 

An Ask Extension Expert Replied December 13, 2023, 6:47 PM EST
Thank you for your response and clarification. Much appreciated! 

On Wed, Dec 13, 2023, 5:47 PM Ask Extension <<personal data hidden>> wrote:
The Question Asker Replied December 13, 2023, 7:26 PM EST

Please keep us apprised about any issues that may subsequently arise.  Thanks!

An Ask Extension Expert Replied December 13, 2023, 7:36 PM EST

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