Semi-mature Standards & Brit Standards

[Gary Prentice]

Can anyone tell me if there is a British Standard for semi-mature tree sizes? BS3936 part 1 only covers up to extra heavy standards, The national plant specification gives sizes for semi-mature, Barchams claims that semi-mature are in BS3936 but not in my copy apparently.

 

So to clarify; is there a standard for anything over 'extra heavy standard' at 14-16cm girth?

[Gary Prentice]

And there's nothing in BS4043:1989 the rootballed tree one

[daltontrees]

No idea! Maybe you could send a message to Barchams and ask them to clarify. All the suggestions are that the definitions are from 3936 1992 but if you've looked at it and drawn a blank I can't think of anything else.

[Gary Prentice]

Found them all in the HTA up to 50cm girth, semi-mature. 3996 definitely only covers the smaller trees (extra-heavy), there's nothing in the 'nursery to establishment' either.

 

I'm trying to correlate all the standards into one table but its a pain in the proverbial.

[martwizz]

Have you tried 8545? - Trees from Nursery to Environment?

 

I can't see anything flicking through, but its 97 pages so there might be something

[martwizz]

From 8545 : DBH at 1m (in cm)

 

Standard - 8 to 10

Selected standard - 10 to 12

Heavy standard - 12 to 14

Extra heavy - 14 to 16

 

Also I just noticed my copy is marked as a '2013 draft'. I don't know if there is a more recent one. Let me know if you'd like a copy.

[Gary Prentice]

From 8545 : DBH at 1m (in cm)

 

Standard - 8 to 10

Selected standard - 10 to 12

Heavy standard - 12 to 14

Extra heavy - 14 to 16

 

Also I just noticed my copy is marked as a '2013 draft'. I don't know if there is a more recent one. Let me know if you'd like a copy.

 

Its out now:thumbup1: The HTA /National Plant Specification goes up another 11 categories - to 80cm girth, the 50-60cm girth are specified as 1000 litre pots:biggrin:

 

Think the BS might be a bit behind the times, there's no sizing in the BS8545 but it's a good read.