Best Substrate Podcasts (2025)

1
🔒 Structural Substrates 26:40

21d ago26:40

26:40

Subscriber-only episode In this Tuesday episode of Talking Trees, we ascend into the practical world of structural substrates and their critical role in supporting healthy urban trees, especially in areas with paved surfaces and compacted soils. We focus on Cornell University’s CU-Structural Soil® system, an engineered soil blend combining crushed …

1
The Foundation of a Healthy Crop: Getting Substrate Saturation and Rooting-In Right with Jon Jirikovec | Ep 20 54:54

27d ago54:54

54:54

Send us a text In Episode 20 of the GroShow Podcast, host Riley Jones welcomes Grodan Crop Specialist Jon Jirikovec for a deep dive into one of the most important (and often underestimated) parts of a successful grow: initial substrate saturation and rooting strategy. From troubleshooting dry-back issues to dialing in daily irrigations, Jon shares …

1
Tree Climbing Spikes 10:23

39m ago10:23

10:23

Tree climbing spikes, also known as spurs, are essential tools for specific arboricultural operations but come with important considerations. In this Tuesday episode of Talking Trees, we explore the different types of climbing spurs, focusing on materials like steel and aluminum, and gaff lengths suited for tree, pole, or hybrid work. We discuss: H…

1
Osmosis and Root Function 14:21

21h ago14:21

14:21

In this Monday episode of Talking Trees, we explore the vital processes of osmosis and root function that underpin healthy tree growth and establishment. Understanding how roots interact with their environment is crucial for arborists and anyone managing young or mature trees. We discuss: How osmotic processes drive water uptake and nutrient transp…

1
RECAP - CW 17/2025 15:35

2d ago15:35

15:35

This is your weekly summary of the Talking Trees podcast! 🌱 Monday 142 - Easter and Tree Traditions We explored the symbolic connections between Easter celebrations and trees, highlighting the Tree of Life, Slavic spring rituals, and the deep-rooted relationship between seasonal traditions and nature. 🧗 Tuesday 143 - Ely’s London Plane – Earth Day …

1
🔒 Allergenicity and Trees 10:18

3d ago10:18

10:18

Subscriber-only episode In this Saturday episode of Talking Trees, we explore how urban trees and green spaces contribute to pollen allergenicity, a growing health concern—especially as climate change alters pollen production patterns. We discuss: Findings from Florence and Córdoba showing how urban park design, plant species selection, and park si…

1
Episode 218: Vibe Coding 1:46:20

4d ago1:46:20

1:46:20

Podcasting 2.0 April 24th 2025 Episode 218: "Vibe Coding" Adam & Dave Dive into the depths of location, lit, funding and ShadowDOM ShowNotes We are LIT 2.4 Billion dollars Lightphone III SPC Location Tag Live Item Tag and Location go hand in hand What is radio? Live streams from players (rss feed) This Week In Liquid Soap Vibe Coding ShadowDom Live…

1
ASCA - Arbor Day 11:34

4d ago11:34

11:34

In this special Arbor Day episode of Talking Trees, we shine a light on the role of consulting arborists and the importance of the American Society of Consulting Arborists (ASCA) in shaping the arboricultural profession. We discuss: The differences between arborists, certified arborists, and consulting arborists, focusing on training, experience, a…

1
🔒 Fire, Humans and Trees 15:19

5d ago15:19

15:19

Subscriber-only episode In this Thursday episode of Talking Trees, we take a long-view perspective on one of humanity’s most transformative relationships: the discovery and use of fire, and its complex connection with trees and the natural world. We discuss: How early hominins first encountered natural wildfires and slowly began to control and harn…

1
🔒 Severe Pruning and Ecoservices 12:13

6d ago12:13

12:13

Subscriber-only episode In this Wednesday episode of Talking Trees, we take a critical look at how severe pruning—especially topping—affects urban trees and their ability to provide ecosystem services. Drawing from the latest scientific research, we explore how pruning practices shape tree physiology, carbon capture, and microclimate regulation. We…

1
Ely`s London Plane - Earth Day 9:58

7d ago9:58

9:58

In this special Earth Day episode of Talking Trees, we spotlight one of the UK’s most iconic trees: the Great London Plane of Ely. Celebrated as the largest of its kind in the country, this remarkable specimen stands not only as a botanical giant, but also as a symbol of heritage, science, and community engagement. We discuss: The historic and cult…

1
Easter and Tree Traditions 14:12

8d ago14:12

14:12

In this Monday holiday episode of Talking Trees, we explore the rich symbolic and cultural connections between Easter celebrations and trees. From the ancient Tree of Life to Slavic rituals involving willow branches, this episode weaves together mythology, art, and seasonal tradition. We discuss: The Tree of Life as a universal symbol of regenerati…

1
🔒 RECAP - CW 15/2025 15:41

8d ago15:41

15:41

Subscriber-only episode This is your weekly summary of the Talking Trees podcast – bringing you a full week of arboricultural knowledge, inspiration, and science. 🌱 Monday 128 - Tree Interactions with Other Organisms We began the week exploring how trees coexist with fungi, animals, and microbes. Learn how mycorrhizal networks, competition, and sym…

1
RECAP - CW 16/2025 10:25

9d ago10:25

10:25

This is your weekly summary of the Talking Trees podcast – exploring everything from microbiomes to medicine. Here's what we uncovered this week: 🌱 Monday 135 - Street Trees and Soil Microbiota We opened the week underground, exploring how microbial life in the rhizosphere supports urban street trees. Bacteria, fungi, and endophytes form biochemica…

1
🔒 Trees Pharmacological 11:30

10d ago11:30

11:30

Subscriber-only episode In this Saturday episode of Talking Trees, we explore the pharmacological potential of trees, focusing on two iconic species: Fraxinus (ash tree) and Salix alba (white willow). Both have long histories in traditional medicine and are now gaining attention in modern pharmacological research. We discuss: The presence of powerf…

1
International Society of Arboriculture = ISA 13:07

11d ago13:07

13:07

In this Friday episode of Talking Trees, we celebrate the legacy and ongoing impact of the International Society of Arboriculture (ISA)—the world’s leading organization dedicated to advancing the profession of arboriculture. We explore: The history of ISA, which celebrated its 100th anniversary in 2024 The evolution of its scientific journal from t…

1
🔒 Trees and Cancer 15:47

12d ago15:47

15:47

Subscriber-only episode In this Thursday episode of Talking Trees, we explore the emerging and complex connections between exposure to trees and green spaces and the risk of cancer, particularly breast cancer. While research is still developing, recent studies have started to uncover possible protective effects of urban greenery on human health. We…

1
🔒 Lightning and Trees 14:49

13d ago14:49

14:49

Subscriber-only episode In this Wednesday episode of Talking Trees, we investigate the powerful and often underestimated role of lightning in the life and death of trees. Lightning not only causes physical damage but may also shape tree evolution and biodiversity over time. We explore: How lightning strikes affect tree aging, decay processes, and h…

1
🔒 Groundie 13:32

14d ago13:32

13:32

Subscriber-only episode In this Tuesday episode of Talking Trees, we focus on the often underappreciated but absolutely essential role of the Groundie—the ground worker in tree care operations. Inspired by Jeff Jepson’s book Groundie, we explore what it takes to thrive in this demanding position. We discuss: The core responsibilities of a ground wo…

1
🔒 Street Trees and Soil Microbiota 14:59

15d ago14:59

14:59

Subscriber-only episode In this Monday episode of Talking Trees, we uncover the hidden world beneath our feet—the soil microbiota that supports and sustains urban street trees. This episode dives into the crucial roles played by bacteria, fungi, and other microorganisms living in the rhizosphere and within tree tissues. We discuss: How microbial co…

1
Mark Johnston - Lifelong Arborist 19:55

16d ago19:55

19:55

In this Friday episode of Talking Trees, we celebrate the remarkable career of Dr. Mark Johnston, a pioneer in urban forestry whose life’s work has shaped tree care across the UK and beyond. Drawing from his autobiographical reflections in the 2024 TREES e-book, this episode offers a personal and professional journey through decades of dedication t…

1
🔒 Chalara fraxinea 14:33

17d ago14:33

14:33

Subscriber-only episode Episode Summary (English): In this Saturday episode of Talking Trees, we examine the devastating impact of Chalara fraxinea (Hymenoscyphus fraxineus), the fungal pathogen behind ash dieback in Europe. We explore the spread, symptoms, and susceptibility factors affecting Fraxinus excelsior and other ash species, including fin…

1
🔒 Who Should Pay to Protect Trees 13:58

20d ago13:58

13:58

Subscriber-only episode In this Thursday episode of Talking Trees, we examine one of the most contentious questions in urban arboriculture: who should bear the cost of protecting trees? Focusing on legal and planning frameworks in the United States, the episode explores how local tree protection ordinances can spark conflict between environmental g…

1
🔒 Tree Injections 17:08

20d ago17:08

17:08

Subscriber-only episode In this Wednesday episode of Talking Trees, we dig into the science and practice of tree injections, also known as vegetative endotherapy. This method of delivering substances directly into a tree's vascular system is transforming plant care, especially in managing pests and diseases. We explore: The history and development …

1
🔒 Tree Interactions with Other Organisms 12:53

22d ago12:53

12:53

Subscriber-only episode In this Monday episode of Talking Trees, we dive into the intricate world of how trees interact with a wide range of other organisms—from fungi, lichens, and microbes to insects, birds, and mammals. These relationships are fundamental to ecosystem balance, biodiversity support, and forest resilience. Drawing from recent rese…

1
RECAP - CW 14/2025 14:14

23d ago14:14

14:14

This is your weekly summary of the Talking Trees podcast – bringing you expert insights and practical knowledge from Monday to Saturday. Here’s what we covered this week: 🌱 Monday 121 - Function of Assimilation Apparatus We explored the role of the assimilation apparatus – leaves and needles – in photosynthesis and stress adaptation. Learn how tree…

1
🔒 Erwinia amylovora 17:08

24d ago17:08

17:08

Subscriber-only episode In this episode of Talking Trees, we dive into the bacterial disease Erwinia amylovora, commonly known as fire blight. Listeners learn about the origins, biology, and symptoms of this aggressive pathogen that primarily affects apple and pear trees. The discussion covers essential practices for managing outbreaks, including p…

1
Episode 217: Post Economic 1:32:06

26d ago1:32:06

1:32:06

Podcasting 2.0 April 4th 2025 Episode 217: "Post Economic" Adam & Dave are joined by International Troublemaker Matt Medeiros ShowNotes We are LIT This Week In Liquid Soap Matt Madeiros International Troublemaker Matt Medeiros WordPress Podcast & Entrepreneur | Matt Report Podcast Power - Podcasting 2.0 Features Is The Podcast Industrial Complex De…

1
David Lonsdale 19:39

25d ago19:39

19:39

In this episode, listeners meet renowned arboricultural expert David Lonsdale. David shares his inspiring journey and extensive experience, discussing his insights on tree pathology, tree risk assessment, and management strategies that promote healthy urban forests. He provides practical knowledge blended with anecdotes from his long career, highli…

1
🔒 Tree Value Calculation 12:28

26d ago12:28

12:28

Subscriber-only episode In this episode, we explore the methodologies and importance of calculating tree values, focusing on how arborists and municipalities assess the financial, ecological, and aesthetic worth of urban trees. We discuss common valuation techniques, including the Replacement Cost Method and the Amenity Valuation approach, highligh…

1
🔒 Practical Pollarding 20:32

27d ago20:32

20:32

Subscriber-only episode Today’s episode takes us into the world of pollarding, a classic pruning technique that’s still relevant in modern arboriculture. We explore the difference between pollarding and topping, explain why the term “pollard” can be misunderstood, and discuss its advantages, especially in urban environments. You’ll also learn about…

1
🔒 Soil Decompaction 10:57

28d ago10:57

10:57

Subscriber-only episode In today's episode, we delve into the crucial topic of soil decompaction. Compacted soils severely hinder tree root growth and water infiltration, impacting overall tree health. We explore practical methods for addressing soil compaction, including air spading, vertical mulching, and the use of compost or biochar. You’ll als…

1
🔒 Function of Assimilation Aparatus 12:48

29d ago12:48

12:48

Subscriber-only episode In this episode of Talking Trees, we explore the function of the assimilation apparatus in trees—namely, the leaves and needles that drive photosynthesis and support tree vitality. We discuss: The structure and role of leaves and needles in gas exchange and energy production How morphological and anatomical adaptations help …

1
RECAP - CW 13/2025 11:23

30d ago11:23

11:23

This is your weekly summary of the Talking Trees podcast. Let’s revisit the fascinating episodes we explored this week: 🌱 Monday 114 - Pulleys and Friction Rings We kicked off the week with a look at the essential climbing gear—pulleys and friction rings. We discussed their functions, differences, and best use cases in tree work. 🧗 Tuesday 115 - St…

1
🔒 Trees and Bats 13:36

1M ago13:36

13:36

Subscriber-only episode In this episode of Talking Trees, we explore the close relationship between trees and bats, highlighting the essential role trees play as habitat providers for these fascinating nocturnal mammals. Bats rely on old, hollow, or dead trees for roosting, breeding, and protection—making arboriculture an important ally in bat cons…

1
Episode 216: Salty Sage 1:28:16

1M ago1:28:16

1:28:16

Podcasting 2.0 March 28th 2025 Episode 216: "Salty Sage" Adam & Dave talk about the future of the Live Item Tag ShowNotes We are LIT Infinite Dial shows growth in the car Interaction / comments / Trufans Salty Sage! Live Events in Podcast Apps | Dave Blog | Podcast Standards Project ------------------------------------- MKUltra chat Transcript Sear…

1
Alex Shigo 9:01

1M ago9:01

9:01

In this episode of Talking Trees, we pay tribute to Dr. Alex Shigo, the father of modern arboriculture. His groundbreaking research on tree biology, particularly the CODIT model (Compartmentalization of Decay in Trees), revolutionized how arborists understand and care for trees. We discuss: His pioneering work at the U.S. Forest Service The shift f…

1
🔒 Cultus Arborum 13:08

1M ago13:08

13:08

Subscriber-only episode In this episode of Talking Trees, we explore the cultural and spiritual significance of trees throughout human history, focusing on the concept of Cultus Arborum—the ancient reverence and ritual worship of trees across civilizations. We discuss: Historical tree veneration – From sacred groves in Celtic and Germanic tradition…

1
🔒 Mechanosensitive Control of Plant Growth 14:58

1M ago14:58

14:58

Subscriber-only episode In this episode of Talking Trees, we explore the fascinating world of mechanosensitive control in plant growth—how trees and plants perceive, respond to, and even adapt to mechanical forces from their surroundings and their own structure. We discuss: Mechanosensing basics – How plants detect tension, compression, and mechani…

1
🔒 Stockholm Soils 20:00

1M ago20:00

20:00

Subscriber-only episode In this episode of Talking Trees, we explore the Stockholm Soil system—an innovative urban tree planting method designed to support healthy root development and infrastructure compatibility. This Swedish-engineered approach combines load-bearing stone aggregates with structured soil and biochar, enabling robust tree growth e…

1
🔒 Pulleys and Friction Rings 12:36

1M ago12:36

12:36

Subscriber-only episode In this episode of Talking Trees, we explore the mechanical principles and real-world performance of pulleys and friction rings in arboricultural operations. These components are essential tools for arborists when it comes to lifting, lowering, and redirecting loads safely and efficiently. We discuss: Mechanical advantage an…

1
RECAP - CW 12/2025 9:37

1M ago9:37

9:37

Welcome to this week's recap of Talking Trees, where we summarize the key insights from Monday to Saturday. Let’s dive into what we covered this week! 🌱 Monday 107 - Hirons - Applied Tree Biology We explored the essential principles of tree biology as outlined in Dr. Andrew Hirons' book Applied Tree Biology. Topics included tree anatomy, root funct…

1
🔒 Pseudomonas syringae 9:50

1M ago9:50

9:50

Subscriber-only episode In this episode of Talking Trees, we examine Pseudomonas syringae pv. aesculi, the bacterial pathogen responsible for horse chestnut bleeding canker—a serious disease affecting Aesculus hippocastanum across Europe. Topics discussed: Identification and symptoms – How to recognize bleeding canker through bark lesions, dark exu…

1
Episode 215: Traffic and Weather on the 8's 1:34:23

1M ago1:34:23

1:34:23

Podcasting 2.0 March 21st 2025 Episode 215: "Traffic and Weather on the 8's" Adam & Dave Talk with Tom Webster of Sounds Profitable about the future of podcasting ShowNotes We are LIT From Sounds Profitable - Tom Webster Tom Webster on the Podcast Consumption - Podcasting 3.0 The whole conversation omitted one thing: It's always the content The mos…

1
Singapore Biodiversity Index - International Day of Forests 15:50

1M ago15:50

15:50

In this special episode of Talking Trees, we highlight the International Day of Forests and its significance in promoting global awareness of forest conservation. Established by the United Nations, this annual event encourages efforts to protect and restore forests worldwide. We also explore the Singapore Biodiversity Index, a tool designed to meas…

1
🔒 Tree Roots and Buildings 15:19

1M ago15:19

15:19

Subscriber-only episode In this episode of Talking Trees, we explore the complex relationship between tree roots and buildings, a critical issue in urban arboriculture and landscape planning. While trees provide numerous ecological and aesthetic benefits in cities, their roots can sometimes interfere with foundations, underground utilities, and pav…

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