3
« on: April 25, 2018, 06:22:30 PM »
Location Vienna/Austria Zone 7b
After a very mild period of tempertures mostly above 0°C we had one week with minimum down to -15° and daytime temperatures below zero. During this week I protected my Citrumelo 5*, Ichangquat and PTXSunki with thick fleece. C. ichangensis IVIA got only some sunprotection and Chimera "Prague" stayed unprotected. Prague does not show any damage. It is now full of flowers. Citrus ichangensis lost 50% of its leaves but nu further damage. Citrumelo 5* which is high crafted, has heavy cracks on the bark of the rootstock (PT!) and has lost all its leaves. It will lose wood aswell. Ichangquat is nearly dead, but PTXSunki has no damages. It lost all its leaves as it does nearly every year. I was a little bit frustrated because I thought high crafting would prevent frost-cracks on the bark but t oviously does not. Any ideas why not?