Is Ficus johannis resistant to RKN?

[Nice Figs]

I grow figs in Japan. nice to meet you.

I read a thread about Ficus palmata doing well in soil with high RKN concentration. If palmata is RKN resistant, is Ficus johannis, which is also a subspecies of carica, RKN resistant? If anyone has experience with Ficus johannis being infected with RKN, please let me know.

I am looking for RKN resistant rootstocks.

F. opposita is hard to get in Japan. I am concerned about the cold hardiness of F. rasemosa. It may not survive in hardiness zone 9b. F. palmata is only available as a hybrid with carica. I am currently planting Iraq (Palmata carica hybrid？) in RKN soil to check its resistance.

Ficus johannis "Ice Crystal" is available in Japan. If RKN resistance is confirmed, johannis could be a savior.

 

[ktrain]

I don't grow Ficus Johannis, but I have read some articles that only say there is not sufficient information to say if it is RKN resistant.
Here in Georgia, RKN doesn't seem to be an issue....knock on wood.

Is it wide spread in Japan?

 

[Nice Figs]

I don't grow Ficus Johannis, but I have read some articles that only say there is not sufficient information to say if it is RKN resistant.
Here in Georgia, RKN doesn't seem to be an issue....knock on wood.

Is it wide spread in Japan?

Thank you for the information on Ficus johannis. Yes, RKN is rampant in Japan. This is one of my concerns, so I'm looking for a rootstock that will solve the problem.
I hope johannis is the solution... I'm jealous of RKN's problem-free land.

 

[Figless]

@"Nice Figs"#220 Since today is your very first day let me welcome you to Figfanatic.com. I am not very knowledgeable about [font='Helvetica Neue', Helvetica, Arial, sans-serif]Ficus johannis (Ice Crystal). We do have at least two members who would Maybe, helpful to you on this subject. @"epiphyte"#53 , and @"GoodFriendMike"#9 . You are the 220th member of this platform. We have at least three members who have joined us from Japan including you. Applause  [/font]

 

[Nice Figs]

@"Nice Figs"#220 Since today is your very first day let me welcome you to Figfanatic.com. I am not very knowledgeable about [font='Helvetica Neue', Helvetica, Arial, sans-serif]Ficus johannis (Ice Crystal). We do have at least two members who would May b be helpful to you on this subject. @"epiphyte"#53 , and @"GoodFriendMike"#9 . You are the 220th member of this platform. We have at least three members who have joined us from Japan including you. Applause  [/font]

Hi, nice to meet you. That's reassuring, I would like to know what they know about RKN resistance in Ficus johannis.

 

[GoodFriendMike]

I have a few Ficus Johannis trees. But I am unsure of it’s RKN resistance. There is a member here who lives in Japan. That is rooting Icebox. Which is a Ficus Palmata Caprifig. Maybe he will have an extra tree if he is successful in rooting.

 

[Nice Figs]

I have a few Ficus Johannis trees. But I am unsure of it’s RKN resistance. There is a member here who lives in Japan. That is rooting Icebox. Which is a Ficus Palmata Caprifig. Maybe he will have an extra tree if he is successful in rooting.

Thank you for the information. According to my research, Ficus palmata seems to be strong against RKN. It's not conclusive yet...but I've seen some similar testimonies on other forums. Can you tell me about the Japanese members who made Icebox take root? It is difficult to obtain uncrossed F.palmata in Japan.

 

[GoodFriendMike]

I have a few Ficus Johannis trees. But I am unsure of it’s RKN resistance. There is a member here who lives in Japan. That is rooting Icebox. Which is a Ficus Palmata Caprifig. Maybe he will have an extra tree if he is successful in rooting.

Thank you for the information. According to my research, Ficus palmata seems to be strong against RKN. It's not conclusive yet...but I've seen some similar testimonies on other forums. Can you tell me about the Japanese members who made Icebox take root? It is difficult to obtain uncrossed F.palmata in Japan.

@"Sayabo"#135 Is his forum name.

 

[Nice Figs]

I have a few Ficus Johannis trees. But I am unsure of it’s RKN resistance. There is a member here who lives in Japan. That is rooting Icebox. Which is a Ficus Palmata Caprifig. Maybe he will have an extra tree if he is successful in rooting.

Thank you for the information. According to my research, Ficus palmata seems to be strong against RKN. It's not conclusive yet...but I've seen some similar testimonies on other forums. Can you tell me about the Japanese members who made Icebox take root? It is difficult to obtain uncrossed F.palmata in Japan.

@"Sayabo"#135 Is his forum name.

Thank you. I'll ask him if I can get some cuttings from him if he succeeds in rooting the icebox.

 

[epiphyte]

welcome to the forum!  since johannis naturally grows in habitats that might be even drier than carica's habitat, i doubt that johannis would be more resistant to rkn than carica.  palmata might occur in slightly wetter habitats than carica.  but i wouldn't be surprised if it turned out that palmata was not rkn resistant either.  

have you considered trying pumila or its hybrid with carica as a rootstock?  right now i have pumila happily growing on carica rootstock.  i have the hybrid as well but haven't tried grafting with it.  

on instagram is a guy in japan with an incredible ficus collection.  he has ficus septica which i'm pretty sure has been used as a rootstock for carica in the tropics.  but i don't know how cold tolerant septica is.  

have you tried finding the crosses made between erecta and carica?

 

[Nice Figs]

welcome to the forum!  since johannis naturally grows in habitats that might be even drier than carica's habitat, i doubt that johannis would be more resistant to rkn than carica.  palmata might occur in slightly wetter habitats than carica.  but i wouldn't be surprised if it turned out that palmata was not rkn resistant either.  

have you considered trying pumila or its hybrid with carica as a rootstock?  right now i have pumila happily growing on carica rootstock.  i have the hybrid as well but haven't tried grafting with it.  

on instagram is a guy in japan with an incredible ficus collection.  he has ficus septica which i'm pretty sure has been used as a rootstock for carica in the tropics.  but i don't know how cold tolerant septica is.  

have you tried finding the crosses made between erecta and carica?

Hello, thank you for all the information. You are knowledgeable about the Ficus genus!

Ficus johannis may not be RKN resistant because it looks very similar to carica. However, I saw information that F. palmata grew well in RKN soil (I was surprised), so I felt that johannis may also show RKN resistance.
F. pumila is grown as a houseplant in Japan and is easy to get. If it has graft compatibility with Carica, I will try it.

Regarding ficus septica, does it have graft compatibility with carica? This is useful information.
I did not know that ficus septica was used as a rootstock in tropical regions. The only concern is its cold resistance. ficus septica grows wild in Okinawa, Japan, and is also relatively easy to get in Japan. I will try to get ficus septica and grow it. Thank you.

It seems that Reikodai Ichigo is RKN resistant. However, this is a variety developed for agricultural use, and if you use it, you will need to pay a fee to the right holder. So I am considering creating my own hybrids, which will take many years.