On Sunday, November 24, 2013 2:27:55 PM UTC, Janet wrote:
In article ,

says...

We have a male Sea-buckthorn, c.10 feet high, in a suitably moist area, and close to the sea,

and would like one or more females to grow alongside it. I've looked

on the internet and 1?2 year old plants are available from a number of

nurseries but all but one say that you can't sex them until they fruit

at 5?6 years old.



Then they must be referring to plants grown from seed?





The exception offers female plants of Hippophae rhamnoides 'Leikora',

which, as they are only 20?30 cm in height, can only be 1 year old, so

how do they know the sex,



Because they are clones of a mature plant that's known to be female.

Either grown from cuttings or micro cell propagation, they would be

identical to the parent they were taken from.

That's a very good point, Janet. I think I'll ask them

--
Malcolm