The Tropical Fruit Forum

Fourwinds has it on C35

That is the way my kumquat trees grew.  They filled out and look better.  Do not prune

don't wrap.  It will hold moisture and pathogens against the tree.  Paint with latex white paint thinned by 50% water if you do anything

Hi  I am new to this group.  My main interest is kumquat, figs, sweet lemons, and valentine pomelo and that is what  I have.

It appears that the only affected citrus I have is New Zealand lemonade and Valentine pomelo.  The big question;  Does citrus on Seville sour orange rootstock get protection from the roots against HLB.  If so I am in great shape.

This is the same tree at progressive stages of growth after grafting.

My New Zealand lemonade on Seville sour has small flower buds

Very nice growth.  We don't get anywhere near that much growth in one year for in ground citrus trees herein Cincinnati Ohio

I have a seed grown Fukushu/changshou planted outside in ground.  I have not gotten any fruits yet.  It has just completed its 4th year outside from 3-8-16.  I live in zone 6 Cincinnati Oh on the teays river bank.  I do not have any Idea how cold it has gotten for it but it is doing very well

I need to add that the glass used on my enclosures are made of double sets of Low-E windows.  My enclosure does not heat up uncontrollable on bright sunny days.  The biggest enclosure has plane glass at the bottom so that what heat comes in heats the soil to aid in roots moving water as  needed.  It holds heat down to 15F over night so that plants don't see  frost.  There is also enough humidity so that the inner layer of 4 layers glass can keep from freezing through condensation and at last freeze-frost.  still locked at 32F until the humidity is gone.  That takes a long time.  Heat of condensation 520 cal/gram.  Heat of fusion another 80 cal/ gram.  I plan to use an open barrel of 60F water as a heat source to provide the humidity to provide my condensate freeze heating system when the final shape of  my greenhouse is determined.

My C35 defoliated and lost smaller twigs at 10F.  I have a changshu on C35.  Here in Cincinnati Ohio it has been outside for 25 of 31 nights in January. 17 out of 29 nights in February, and has only been inside for 2 nights in March.  Changsha dies long before C35 does in cold.

I am going to plant my seed grown meiwa kumquat tree in a raised hard pan clay hill so that it will grow in a slow cold hardy compact form to see how it handles cold weather.

Heinrich
What rootstock is your Marumi on.  I was looking for a Marumi on Poncirus trifoliata or  a seedling tree. I have 4 seedling Meiwa trees and a grafted Meiwa.  The grafted Meiwa is on kuharske citrange.  They are not compatible and tree just survives. 
3 year old seedling meiwa with fruit


3 year old seedling meiwa with out fruit