M9? G41? Apple Rootstocks Explained with John Strang ( EPS # 88)

B9? EMLA107? What's the difference between the many different types of rootstocks used for apple trees. And which is the best for you? Learn more in this episode of The Urban Forestry Radio Show and Podcast. Our expert guest is John Strang, Retired Extension Fruit and Vegetable Specialist from the University of Kentucky.

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Chapters
00:00 Introduction
02:17 What are apple rootstocks?
03:07 History of apple rootstocks
04:07 History of Malling apple rootstocks
04:43 How Malling propagated rootstocks
06:04 Apple rootstocks from around the world
07:41 Why different rootstocks are needed
08:33 How fruiting keeps dwarfing trees small
09:54 Why dwarfing rootstocks can be brittle
10:52 Downside of dwarfing trees
12:44 Changing popularity of rootstocks
16:42 Apple rootstocks and fruit tree nurseries
19:16 Growing apple rootstocks from seed
20:09 What is fireblight
22:39 Fireblight resistant rootstocks
23:23 How to wash pesticides off apples
24:23 Bagging apples to protect them from pests
25:41 Apple rootstocks in Florida
29:49 Fruit tree grafting online course
30:50 Whiffletree Nursery
31:58 Silver Creek Nursery
35:23 Rootstocks and scions that work well together
37:00 Apple rootstocks for Alaska
40:20 Apple rootstocks in Canada
41:59 Freestanding dwarf rootstocks
43:59 Semi dwarf rootstocks for public spaces
44:34 Interstem grafting
47:03 Thinning fruit to increase tree growth
52:10 Bud9 vs M9 apple rootstocks
54:13 Grafting with Dolgo rootstock
56:05 Why dwarfing trees need more care*
58:14 Show wrap up

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