Saturday, June 20, 2026

GardenDC Podcast Episode 291: Summer Tree Care

In this episode of GardenDC: The Podcast about Mid-Atlantic Gardening, we talk with award-winning horticultural author, speaker, and podcaster Eva Monheim* about Summer Tree Care. The plant profile is on Lantana and we share what's going on in the garden as well as some upcoming local gardening events in the What's New segment. We close out with the Last Word on "Planting an Herb Garden" from Christy Page of GreenPrints.

*You can order Eva Monheim's book Shrubs and Hedges at https://amzn.to/4oZ9iN3
This link is to our Amazon affiliate account and we may earn a few pennies from these sales, but it wil not impact your purchase price.

You can listen to Eva's podcast at https://www.youtube.com/@ThePlantATrillionTreesPodcast

BTW, YOU can become a listener supporter for as little as $0.99 per month! 

See how at: https://creators.spotify.com/pod/show/gardendc/subscribe

SHOW NOTES:

01:22 Welcome horticultural author, speaker and podcaster Eva Monheim

02:46 Eva’s podcast “The Plant a Trillion Trees Podcast”

04:07 About Eva’s first podcast guest, Mindy Maslin of the Pennsylvania Horticulture Society

05:30 Eva’s first podcast episode, about PHS' Tree Tenders

05:45 Eva’s and Tree Tenders’ locations in Pennsylvania

06:11 Eva’s new podcast co-host, Lou Meyer

06:27 Lou was the guest on GardenDC Podcast Episode 87: Winter Tree Care

09:21 Kathy opens the topic of summer tree care

09:50 Preventative power of pruning trees before storms

14:08 Pruning: Consider a tree’s root system

14:59 Harm of adding mulch around the base of a tree trunk

17:20 Pruning: Consider whether a tree is in its natural shape

18:17 Kinetic energy and physics involved in tree care!

21:54 Formative pruning of young trees

22:00 Bringing all this back to natural tree shape

23:20 Limbing up trees without sending them into “shock”

27:21 Book “Groundcover Revolution” by Kathy Jentz

29:19 Harm of tree topping

30:40 How trees heal: Compartmentalization

33:58 How to prevent and treat damage from utility companies’ pruning

35:23 Pollarding: Purpose and process

37:19 Which trees do better with pollarding?

39:20 Protecting trees from insect pests

42:00 Cherry trees and gummation

42:43 Reasons to prune in summertime

44:47 When in summer is it best to prune?

45:26 “Three Ds”: Diseased, dead, damaged

47:47 Connect with Eva: Email evamonheim@gmail.com, YouTube @evamonheim1714

48:26 Eva’s favorite summer interest trees

51:22 Book “The Urban Garden” by Kathy Jentz and Teri Speight

52:46 Plant profile: Lantana

54:30 What’s new in the garden this week? Blooms, tomatoes, garlic, zinnias

54:49 Garden tips: Supporting pollinators

55:14 Local gardening events

55:17 National Gallery of Art Sculpture Garden extended hours through Sept. 5

55:56 Summer Harvest Dinner at Common Good City Farm on June 25 in D.C.

56:21 Info at commongoodcityfarm.org

56:25 Garden Talks at Arlington Central Library

56:58 Info at arlingtonurbanag.org

57:26 Christy Page reads “Planting an Herb Garden” by Amanda MacArthur

If you liked this episode, you may also enjoy listening to:

~ GardenDC Podcast Episode 12: Shrubs and Hedges with Eva Monheim

https://washingtongardener.blogspot.com/2020/05/gardendc-podcast-episode-12-eva-monheim.html

~ GardenDC Podcast Episode 87: Winter Tree Care with Lou Mayer

https://washingtongardener.blogspot.com/2022/01/gardendc-podcast-episode-87-winter-tree.html

~ GardenDC Podcast Episode 240: Top Urban Trees with Robert Shaut of Casey Trees

https://washingtongardener.blogspot.com/2025/05/gardendc-podcast-episode-240-top-urban.html

This episode is archived at: https://open.spotify.com/episode/17wd3FtSSGCrMBFeZG6g92?si=tOugXm5MQHqHsGIXdm4aew
 

We welcome your questions and comments! You can leave a voice mail message for us at: https://podcasters.spotify.com/pod/show/gardendc/message Note that we may use these messages on a future episode.

And be sure to leave us a 5-star review on your favorite podcast platform plus share us on social media with #GardenDC, so other gardeners can find us too!

Episode Credits:
Host and Producer: Kathy Jentz
Show Notes: Maya Hand
Music: Let the Sunshine by James Mulvany

PIN THIS FOR LATER!
*You can order Eva Monheim's book Shrubs and Hedges at https://amzn.to/4oZ9iN3
This link is to our Amazon affiliate account and we may earn a few pennies from these sales, 
but it wil not impact your purchase price.

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