Houseplant help please-before it is too late

Lynnscholes

I bought an Oxalis Triangularis houseplant and love it. However, over the last few months ( I bought it in the spring) it has gone lanky, lots of the leaves have dies and it looks really sad. 

I do have a few new shoots coming through but more are dieing each day. It was dry so I gave it a good water, it is kept on a window sill in a cool house. There are no roots showing out of the bottom of the pot so I don’t think it needs re potting. I

I bought it after seeing someone who had this huge amazing specimen so I know how wonderful they can look. Want to get mine back on track. 

Thanks in anticipation. 

Obelixx

They like cool rooms and can go outside once all danger of frost is past so maybe it's just got a bit to warm and dry.  When you water, try the dunking method - submerge the pot in a bucket or bowl of water deep enough to cover the pot.  Wait till all air bubbles stop and then drain completely before putting it back in its tray or cache-pot.

The RHS offers this advice - https://www.rhs.org.uk/plants/63222/i-oxalis-triangularis-i-subsp-i-papilionacea-i/details

Lynnscholes

Thanks Obelix . Bought as houseplant. Kept on very cool window sill! At a loss