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purple dots on my cauliflower


 
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sunnymount farm
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 01 Jul 2009
Posts: 47
Location: Tyrone

PostPosted: Sat Jul 03, 2010 11:25 am    Post subject: purple dots on my cauliflower Reply with quote

Hi all I would appreciate any help in identifying purple spots on cauliflower.
The cauli is about 6 inches in diameter and appears to have health leaves.
I tried to attached some photo's but it didn't work for me so if I figure it out I'll attached them later for you to see.
Thanks in advance
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michael brenock
Rank attained: Chlorophyll for blood


Joined: 12 Aug 2008
Posts: 1275
Location: cork

PostPosted: Sat Jul 03, 2010 12:01 pm    Post subject: Reply with quote

If cauliflowers are left too long before harvesting then blue/purple spots develop on the curds. Some varieties are more prone to this than others. However if the purple spots are accompanied by hollow stems or sometimes soft black internal rot then this indicates Boron deficiency which can be prevented but not cured.
michael brenock horticultural advisor (retired)
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sunnymount farm
Rank attained: Hazel Tree
Rank attained: Hazel Tree


Joined: 01 Jul 2009
Posts: 47
Location: Tyrone

PostPosted: Mon Jul 05, 2010 8:00 am    Post subject: Reply with quote

Thanks Michael. I'm going to cut out the cauli because it just doesn't look health and i'll have a look for internal rot as well. The strange thing is that I have a row of cauliflowers some raised from seed and others bought from a garden centre in Kilkenny. Only one cauli has formed a head and got purple spots the rest are more protected by leaves and appear to be progressing at a slower but normal rate. Maybe I got one cauli that is different to the rest? Time will tell.
Thanks for your help Michael.
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michael brenock
Rank attained: Chlorophyll for blood


Joined: 12 Aug 2008
Posts: 1275
Location: cork

PostPosted: Mon Jul 05, 2010 9:01 am    Post subject: Reply with quote

check the roots of that plant with the purple spots it may reveal either a maggot or some root or stem rot, highly unlikely that it is a different variety. The more leaves that form before the curd then the bigger the curd will be.
michael brenock horticultural advisor (retired)
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