[MAIPC] mystery invasive in central NJ

Thu May 19 13:07:03 PDT 2022

Please check out this iNaturalist observation https://www.inaturalist.org/observations/113623546 <https://www.inaturalist.org/observations/113623546> —and there are a handful of others from Fairfax County on iNaturalist — identified as Photinia villosa or Pourthiaea villosa.

> On May 19, 2022, at 3:32 PM, Rod Simmons <Rod.Simmons at alexandriava.gov> wrote:
> 
> It is Photinia serratifolia that is a rare escape in Virginia: http://vaplantatlas.org/index.php?do=plant&plant=3890 <http://vaplantatlas.org/index.php?do=plant&plant=3890>
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> From: MAIPC <maipc-bounces at lists.maipc.org <mailto:maipc-bounces at lists.maipc.org>> On Behalf Of Patrick D. Kelly
> Sent: Thursday, May 19, 2022 12:06 PM
> To: MAIPC Listserve <maipc at lists.maipc.org <mailto:maipc at lists.maipc.org>>; INVASIVES at LISTSERV.UMD.EDU <mailto:INVASIVES at LISTSERV.UMD.EDU>; Stephen Hiltner <stevehiltner at gmail.com <mailto:stevehiltner at gmail.com>>
> Subject: Re: [MAIPC] mystery invasive in central NJ
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> Just to be clear and a cautionary head-off of any knee-jerk reactions by the public, you are NOT referring to the popular landscape plant Red Tip Photinia or Photinia x fraseri . 
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> Yes, Dirr mentions in his tome Manual of Woody landscape Plants pg 809 observing this plant P. villossa Oriental Photinia escaping from a noted arboretum "with seedlings established along the road".
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> But no...cultivar Red Tip Photinia, the popular landscape plant, has not been noted for invasiveness. In fact, I'm surprised any of them survive at all due to rampant leaf spot disease.
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>  
> Patrick D. Kelly, Principal and Horticulturist
> PDK Horticultural, LLC Phragmites and Invasive Plant Control Services
> 301 Hope Road
> Centreville, Md 21617
> 443-262-2079 mobile
> https:// <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpdkhorticultural.com%2F&data=05%7C01%7Crod.simmons%40alexandriava.gov%7Cd854d488c2c14ac2c34908da39b177a1%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C637885732813528421%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2BG7SQjLaDUYDvf4OA4T3uaPnc3Rpg53vB%2FT6IwRta9I%3D&reserved=0>PDKH <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpdkhorticultural.com%2F&data=05%7C01%7Crod.simmons%40alexandriava.gov%7Cd854d488c2c14ac2c34908da39b177a1%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C637885732813528421%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2BG7SQjLaDUYDvf4OA4T3uaPnc3Rpg53vB%2FT6IwRta9I%3D&reserved=0>orticultural.com <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpdkhorticultural.com%2F&data=05%7C01%7Crod.simmons%40alexandriava.gov%7Cd854d488c2c14ac2c34908da39b177a1%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C637885732813528421%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2BG7SQjLaDUYDvf4OA4T3uaPnc3Rpg53vB%2FT6IwRta9I%3D&reserved=0>
> https://www.facebook.com/PDKHorticulturalLLC <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.facebook.com%2FPDKHorticulturalLLC&data=05%7C01%7Crod.simmons%40alexandriava.gov%7Cd854d488c2c14ac2c34908da39b177a1%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C637885732813528421%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=992WcRkbugiuZPaSL953Ga2rYmFZ%2BfzzFViXuYHPlzA%3D&reserved=0>
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> On Thursday, May 19, 2022, 08:51:08 AM EDT, Stephen Hiltner <stevehiltner at gmail.com <mailto:stevehiltner at gmail.com>> wrote:
>  
>  
> Many on these listserves can be grateful that you haven't encountered Photinia villosa. I believe it is an escape from a nursery in Princeton, NJ, and is now spreading across the state. A few years back, I discovered another invasive small tree that may be in the same genus, which was changed from Photinia to Pourthiaea. Here are a couple photos of the foliage, comparing the two: https://photos.app.goo.gl/gptnqGTfHnVXZuNz9 <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fphotos.app.goo.gl%2FgptnqGTfHnVXZuNz9&data=05%7C01%7Crod.simmons%40alexandriava.gov%7Cd854d488c2c14ac2c34908da39b177a1%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C637885732813684646%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3VPQzeCdd1v3AXHZvIsH7HdvOxRWEtKFU%2F9B39b2SKI%3D&reserved=0> The Photinia villosa is much coarser.
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> I posted more photos <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.princetonnaturenotes.org%2F2022%2F01%2Fa-mystery-tree-in-princeton.html&data=05%7C01%7Crod.simmons%40alexandriava.gov%7Cd854d488c2c14ac2c34908da39b177a1%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C637885732813684646%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=lUtv%2Fqjo8ckIONl1ZY5SE%2F0a8wk5O6GPOiBuUONUUC0%3D&reserved=0> on my nature blog, and the species, whatever it is, is now being discussed on iNaturalist: https://www.inaturalist.org/observations/117251042 <https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.inaturalist.org%2Fobservations%2F117251042&data=05%7C01%7Crod.simmons%40alexandriava.gov%7Cd854d488c2c14ac2c34908da39b177a1%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C0%7C637885732813684646%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=frnG%2FaUV1VeV2oqC76MuV6DvNsVneSspIJUbDCFnsM8%3D&reserved=0>
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> I've been encountering more and more in Princeton preserves. Most are small and don't bloom, but I have one in my yard that gets some sun and just finished blooming.
>  
> Steve
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