# Help identifying problem with black pines **URL:** \ **Category:** Beginners\ **Created:** [April 18, 2019, 3:53pm UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066 "2019-04-18T15:53:51Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Lolodigo](https://avatars.discourse-cdn.com/v4/letter/l/f05b48/32.png) [@Lolodigo](https://forum.bonsaimirai.com/u/Lolodigo)\ **Post date:** [April 18, 2019, 3:53pm UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066/1 "2019-04-18T15:53:51Z")
Could anyone Please help identifying what might be causing my pine to turn yellow to a pink with stripes. ![image](https://canada1.discourse-cdn.com/flex029/uploads/bonsaimirai/original/2X/4/44cc61cbfc639164fab351a3899f86122dcf8c6c.jpeg) ![image](https://canada1.discourse-cdn.com/flex029/uploads/bonsaimirai/original/2X/2/2cfc0312b1457cea6993cb3b88e38975185e1adf.jpeg) this is my kyokko yatsubusa had yellow tips when I got it, but thought it may be related to the cultivator. Not so sure anymore. And next is my Tai Hei ![image](https://yyz1.discourse-cdn.com/flex029/images/transparent.png) ![image](https://canada1.discourse-cdn.com/flex029/uploads/bonsaimirai/original/2X/e/eb991183a5331172aab27a0b9fcd3bd75ac0efb8.jpeg) I’m not sure if they both are suffering from the same symptoms, or if it’s nutrient burn, or some type of tip blight. Both plants were transplanted late winter. ---
**Author:** ![chuckwheat](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.bonsaimirai.com/chuckwheat/32/828_2.png) [@chuckwheat](https://forum.bonsaimirai.com/u/chuckwheat)\ **Post date:** [April 18, 2019, 6:39pm UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066/2 "2019-04-18T18:39:50Z")
That looks like needle cast. You’ll want to start spraying fungicide as new needles start to emerge from the candles to prevent it from growing. It’s very common where I am so I alternate between Daconil and Copper fungicide every 7-10 days while the needles push. ---
**Author:** ![Lolodigo](https://avatars.discourse-cdn.com/v4/letter/l/f05b48/32.png) [@Lolodigo](https://forum.bonsaimirai.com/u/Lolodigo)\ **Post date:** [April 18, 2019, 8:18pm UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066/3 "2019-04-18T20:18:06Z")
Thank you so much! I’ll have it by Saturday thanks to prime. Now I’ll have to read every article on needle cast I can find. Should I only use while candles are pushing new needles, or just continue till it ceases? I have three types of black pine that have been moved outside since winter has passed. These spring rains are so unpredictable. ---
**Author:** ![Roger\_Snipes](https://avatars.discourse-cdn.com/v4/letter/r/eb9ed0/32.png) [@Roger\_Snipes](https://forum.bonsaimirai.com/u/Roger_Snipes)\ **Post date:** [April 19, 2019, 2:15am UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066/4 "2019-04-19T02:15:48Z")
The spores from the infected needles infect the new needles as they come out. You need to spray per label directions until the new needles start to harden off. ---
**Author:** ![Lola](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.bonsaimirai.com/lola/32/10986_2.png) [@Lola](https://forum.bonsaimirai.com/u/Lola)\ **Post date:** [April 20, 2019, 11:17am UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066/5 "2019-04-20T11:17:50Z")
Your first pic looks like wind burn-its too uniform for blight. The last may be blight. ---
**Author:** ![Rolly.Mirai](https://avatars.discourse-cdn.com/v4/letter/r/919ad9/32.png) [@Rolly.Mirai](https://forum.bonsaimirai.com/u/Rolly.Mirai)\ **Post date:** [April 20, 2019, 11:35am UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066/6 "2019-04-20T11:35:50Z")
I would cover the points mentioned but will add When I re potted my BP I got a similar results but this went after a full season, I think maybe because I could have been a little aggressive with the amount of old soil I removed and maybe the BP was left with less Mycorrhizas Fungi and sulked for a season but now its all cleared and the tips are fine so I hope this will be the case for you 👍 ---
**Author:** ![Lolodigo](https://avatars.discourse-cdn.com/v4/letter/l/f05b48/32.png) [@Lolodigo](https://forum.bonsaimirai.com/u/Lolodigo)\ **Post date:** [April 20, 2019, 11:50am UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066/7 "2019-04-20T11:50:12Z")
Right before these guys went outdoors they were inside with some fans running to move the air around. The first one was directly in front of the fan. I agree with it being very uniform. That’s why I thought it might be someone genetic. I have fungicide on the way, there should be no fowl in treating them as a precautionary measure would there? ---
**Author:** ![Lola](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.bonsaimirai.com/lola/32/10986_2.png) [@Lola](https://forum.bonsaimirai.com/u/Lola)\ **Post date:** [April 20, 2019, 12:53pm UTC](https://forum.bonsaimirai.com/t/help-identifying-problem-with-black-pines/3066/8 "2019-04-20T12:53:39Z")
No it wouldn’t hurt to do a light spray. In fact I do twice a year with copper spray. In fall before putting them to ‘bed’ for the winter and again late spring before heavy growth begins.