yellow plant

Hi all can you please help me, my solanum has turned yellow it is in a pot, i live in spain where the day time temperture stays warm, in the night it can go down to 0% but not often. I keep it moist and in the sun.

chrispat /home/chris/Downloads/Solanum crispum 'Glasnevin' ~cu 2.jpg


Hi again sorry for the poor info but here is more for you to look at. would it be lack of iron?. Look forward to hering from you.

chrispat

This message was edited Dec 6, 2014 9:39 AM

Would be helpful IF you could clarify which Solanum plant you have in your pot. this is a wide range of fruit and flowering plants from the humble Potato to Aubergines and add flowering climbing plants grown up / over climbing frames / fences etc, all are beautiful in their own right.

Most of this species are grown as Annuals, that is they are sewn, germinate, grow and flower all in the one season, from about Feb-Sept-October in the right conditions and your temps will be ideal.

It may be the plant has exhausted it'self and is just dying down, getting ready to pop it's seed pods to allow nature to regenerate new seedlings for next year.

It could be the soil in the pot is depleted of nutrients / moisture holding humus and is way too dry around the roots.
It really does depend on what plant you have, is there any pictures you could send, flower description /colour etc would help to give you better advice unless someone else can help you out more than me BUT Spain would be an ideal climate for all that family of plants to grow good fruit and pretty flower. some may even grow as perennials and therefore they die down for winter sleep BUT, re-sprout the following spring. Like I mentioned though, it all depends on the type of Solanum your growing.
Kindest Regards.
WeeNel.

WeeNel back again Chrispat, Is there any chance your plant could be Jasmine, IF it is, these plants can loose their foliage as temps go cooler especially at night time where there a drop in temp.
Get back to us again with more info.
Good luck.
WeeNel.

WeeNel is right, most solanums are grown as annuals and even in the best of weather situations, like here is California where is rarely gets near freezing they won't survive through winter. The ones that we grow for ornamental purposes have small leaves and small white or purple flowers. They sometimes do get some yellow leaves from the cold but survive winter just fine. The other ornamental ones for sale here have a three lobed leaf and I've never had one make it through winter yet. It's a shame because they are really beautiful plants.

Is this your plant? It is hardy in the milder USDA zones. Not sure how this apply to Spain, but I'll bet it is similar to a mild zone! When you say 0 degrees, is this Celsius or Fahrenheit?
http://www.monrovia.com/plant-catalog/plants/1663/glasnevin-chilean-potato-bush/

Yellowing leaves could be over water, natural die off of some, or poor fertilizer.

I would go easy fertilizing at this time of year. Too much will encourage a lot of new growth that could get nipped by the frost. If you have available a slow release fertilizer, that would be good. Won't get much response right now (which is good) but the fertilizer will be seeping deeper into the soil so it is there where the roots can pick it up in the spring.

You could try some faster release iron fertilizer if you want.

Iron or certain other mineral deficiency shows up in most plants as green veins but yellow in between the veins.
Can you add pictures of the plant, especially some leaves that look close to normal, then some lightly affected, then some of the worst?