You say the leaves are looking terrible. How are they looking terrible? Do they have white specks on them. Are they just droopy. White specks are a sign of spider mite. The bane of impatients. Insecticidal soap helps but you have to spray it often, and get the undersides of the leaves, because they hatch out every 3 to 5 days. Wilting leaves could be a sign of too much water or over fertilizing or maybe the soil it was planted in or even too cool temperatures. It's hard to say without actually seeing the plant. How often do you water. In a planter the size in cooler weather you probably only need to water once a week or even longer. Impatients are very prone to root rot if they are watered too often. As for taking cuttings for any impatients including the new guinea ones, I've done it for years. Cut about a 4 inch piece from the growing tip of a branch. In a pail or container mix a good well draining soil like pro-mix with water so it is moist throughout but not sopping. fill your pots. Dip the cut end of your slip in rooting hormone--I use stim-root NO. 1. With your finger or stick dibble a hole in the soil and drop in your cutting and cover it in. You will know it's rooted when it shows new growth. This usually takes 2 to 3 weeks. Keep the soil moist but not overly wet and don't fertilize for a couple of months until the plant has lots of roots

The plant looks okay to me, but is there a possibility that you're giving it too much water? It's in a pretty big pot for its size. Also, have you given it any fertiliser? I grow my NG indoors, but in a very sunny window and it does great. My guess would be that the fact the plant looks weak was something that was going to happen anyway, regardless of sun.

Individual flowers last 2-3 days but as you say are usually quickly replaced. If the plant stops flowering it is usually a sign that it is stressed in some way. In the summer heat NGI really do need a lot of water and every day. Some liquid feed may help. The ones in the pic look pretty good to me ....Good luck. Ian.

I live in New Zealand and have fought a real battle to grow these plants. We are equvalent to US zone 9, temperate climate. They are susceptible to sudden collapse and root rot, as well as botrytis. They flower like mad if kept slightly pot bound and exposed to lots of direct morning sun. Be careful though as too pot bound impedes drainage and very quickly causes stem rot in these plants. The key seems to be lots of water but with excellent drainage and drier when it is cool. Fallen leaves and flowers causes botrytis almost overnight, so keep the plant clean. A systemic fungicide solved my problems with the Guinea Impatiens and the wilt or sudden collapse problems. Our southern hemisphere midday+ sun is much to bright for them in summer, so they are kept partially shaded in afternoons. They won't flower in full shade, get leggy and eventually collapse. They love misty fine rain in our hot/dry summer and lots of water. I water mine with tepid-warm water like you do with African violets, so as not to shock the plant with sudden cold. Our winters can be rather cold and very wet, so I keep them indoors but fairly close to a window with sun/lots of light and reasonably dry, but never arid to the point where they wilt. I had two 3-year old plants in buckets which flowered beautifully and were fairy large, but they were hit by a rogue frost, albiet a light one and died virtually that day. Each colour of the Guinea Impatiens seems to have different hardiness. The purple colour is by far the strongest and easiest to grow in my opinion, while I find red and white more difficult. Pink is also easy to flower, big blooms but a much smaller plant. Odd eh. Even with failures, I keep buying these plants because they are just so lovely.