You were all very helpful last summer when I needed to repot a plant. Thanks. I now have another issue. I have both a green and a purple oxalis plant. I moved them from my grandmother's house to mine about 3 years ago. They are definitely not doing as nicely in my house as in hers. My purple plant is down to about 2 shoots and it used to have many more. The green one has about 10 shoots. I'm very careful about watering the plants. I water them about once a week and leave just a little water in the dish. Is this too much or too little? When I go back a week later, the dish is dry. Both get light but are not in direct sunlight. I've read that these plants often need some "down" time but how do I know the difference between "downtime" and dying? Any suggestions?