Cyclamen 2009

[Maggi Young]

In real life/metals : very easily.... in plants: with some difficulty! 

[Gerry Webster]

Can anyone recommend a fungicide which is safe to use on cyclamen?

[ashley]

Ashley has covered his options by describing the leaves of his coum as pewter/silver.

That was Jo ...

How does one distinguish between pewter and silver??

... but I'm hoping to learn too.

[johnw]

Can anyone recommend a fungicide which is safe to use on cyclamen?

Gerry - We've occasionally used Rovral (GUARANTEE: 500 g/kg IPRODIONE) for grey mould, it's a wettable powder. Also the systemic Funginex (Triforine 195 g/L), Captan and Benomyl over the years never with ill effect. Never spraying in hot sun.

You can google these for the MSDS.

johnw

 

[Jo]

I would hazard a guess that if you look at Ashley's picture of BSBE 1 the margin of the flower might be described as pewter and the centre as silver, and David the hederifolium leaves look silver.  Mind you even CG-W doesn't really distinguish the two in his monograph. I think more pics should be put up here so a concensus can be reached 

Does anyone know if the RHS colour charts have a definative answer on silver and pewter 

[ashley]

So you think 'pewter' refers to pale colouration that is less intense/solid than 'silver'?  Makes sense.

Thanks Jo

[Oron Peri]

I agree with Jo about the differences, not that I understand  English better, only by growing many Cyclamen that came under these names.
The C. hederifolium David have posted earlier is a good sample for 'Silver leaf', while pewter is more of extinguished, opaque color.

[Michael J Campbell]

Cyclamen Coum foliage today.

[Gerry Webster]

Can anyone recommend a fungicide which is safe to use on cyclamen?

Gerry - We've occasionally used Rovral (GUARANTEE: 500 g/kg IPRODIONE) for grey mould, it's a wettable powder. Also the systemic Funginex (Triforine 195 g/L), Captan and Benomyl over the years never with ill effect. Never spraying in hot sun.
You can google these for the MSDS.
johnw

Many thanks John. In recent times many fungicides formerly available to amateurs have been withdrawn in the EU & I think this includes the ones you mention - Benomyl has certainly disappeared. I used to use Carbendazine (='Supercarb') on 'bulbs' when needed (rarely) but  this no longer exists. The only ones I can find at the moment are old style Copper fungicide, Mancozeb (='Dithane') & Penconazole (='Fungus Clear'). How effective these are &/or how safe with 'bulbous' plants I guess I will have to discover for myself. 

[David Nicholson]

Ashley has covered his options by describing the leaves of his coum as pewter/silver.

That was Jo ...

How does one distinguish between pewter and silver??

... but I'm hoping to learn too.

Sorry Ashley, of course it was Jo, my old brain's getting frazzled.

[David Nicholson]

Can anyone recommend a fungicide which is safe to use on cyclamen?

Gerry - We've occasionally used Rovral (GUARANTEE: 500 g/kg IPRODIONE) for grey mould, it's a wettable powder. Also the systemic Funginex (Triforine 195 g/L), Captan and Benomyl over the years never with ill effect. Never spraying in hot sun.
You can google these for the MSDS.
johnw

Many thanks John. I recent times many fungicides formerly available to amateurs have been withdrawn in the EU & I think this includes the ones you mention - Benomyl has certainly disappeared. I used to use Carbendazine (='Supercarb') on 'bulbs' when needed (rarely) but  this no longer exists. The only ones I can find at the moment are old style Copper fungicide, Mancozeb (='Dithane') & Penconazole (='Fungus Clear'). How effective these are &/or how safe with 'bulbous' plants I guess I will have to discover for myself. 

Gerry, from what I read a couple of weeks ago the next round of EU 'inspired' attacks on agricultural and horticultural chemicals will see all the existing fungicides, and most of the insecticides currently available to gardeners being wiped out.

[David Nicholson]

I would hazard a guess that if you look at Ashley's picture of BSBE 1 the margin of the flower might be described as pewter and the centre as silver, and David the hederifolium leaves look silver.  Mind you even CG-W doesn't really distinguish the two in his monograph. I think more pics should be put up here so a concensus can be reached 

Does anyone know if the RHS colour charts have a definative answer on silver and pewter 

Maggi has an RHS colour chart

Jo, thanks for that, maybe others will be able to post some more pictures.

[Oron Peri]

Michael, what a marvelous selection, thanks for posting these photos
There seems to be also a stunning leaf of C. hederifolium on the top right side of the first photo.

[Michael J Campbell]

Thanks Oron, the Hederifolium seedlings come up everywhere here,I do have to transplant them when they get mixed with the coum or they would overwhelm them.

[Maggi Young]

Wonderful cyclamen!

Yes, Maggi does (thanks to David  ) have an RHS colour chart.... not the full version.... but there is no mention of such metallic hues therein.

In shows there is often controversy about silver .....grey...... somtimes a problem that is circumvented by the wording silver/grey   

The difference with both  the silver or grey  and silver or pewter quetion is, I think, one of shine/sheen  ....... that is to say, as Oron put rather well, silver suggests a gleaming, luminous silvery hue, whereas grey and pewter refer to a more opaque and dull grey metallic tone.