I have started several trays of Elfin Impatiens and I have some plants on one flat where the leaves are turning yellow as you can see in the pic. What is my problem?
With the plants I mean...........................my friends have already identified the rest of my problems
Some things that will make impatiens turn yellow:
1. Getting too dry
2. Staying too wet
3. Not enough nitrogen
4. Too much sun
5. Pythium or some other other root rot fungus(usually caused by staying too wet)
6. Spider mites or thrips
7. Improper venting of gas, propane or kerosene heater
You can try a foliar feed if the problem is nutrient deficiency.
Be careful using insecticides on impatiens, it can cause leaf spot or leaf drop.
And too much fertilizer can burn them too. They sure look good otherwise, so you are doing a great deal right!
Sidney.
Thanks for your thoughts. They reminded me that I added miracle grow to the plant water 4-5 days ago.
Do you think that would do it? I have had the trays under lights 12 hours a day so I think they are getting enough light. I also keep them moist by bottom watering and am going to try watering a little less but am wondering if it is because of over fertilizing then I probably should keep up with the watering.
Also I have started having a few aphids amoungst my plants, most likely from some old Begonia pots I had wintered over so I added a drop or two of Lemon Joy to my spray bottle and spritzed all the trays a few days ago also. Looking at the leaves I can see no sign of insect damage tho.
Thanks for the advice and ideas
I predict that's it. Are they all one color or mixed. For a home gardener that's about the best looking tray of grown from seeds impatients I've seen. You are doing just the right thing.
Sidney
I have read that when you feed seedlings, you should feed them at half strength, every 2 weeks, for the first 5 to 6 weeks or so.
I really don't think it was too much Miracle Grow but maybe those particular cells got more then the others. Do you think it could be caused by the soap spray? I used several drops in a quart spray bottle and wet the trays well on two days
Have you got a breeze there? That helps.
UPDATE
The plants that had yellowed are now flowering but are still yellow. It must have been uneven Miricale grow application.
And yes I have had a small fan going on low from the start
