Is lantana a bi-annual or a perennial?
Lantanas are considered perennials; however, in cooler regions they are typically treated as annuals, since they cannot take the cold and will usually die out. Here is more information on growing these plants: https://www.gardeningknowhow.com/ornamental/flowers/lantana/lantana-plants.htm
I have a lantana plant that has a funny looking white/black striped caterpillar on it as well as what looks like black aphids. What non-toxic solution can I use to get rid of these pests? They are eating all the leaves.
I use neem oil for pests like this. It is safe for people and pets as well as friendly insects that don't eat your plants and can be used on an organic garden. Here is more information:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
These articles should also help: https://www.gardeningknowhow.com/plant-problems/pests/insects/prevent-caterpillars.htm
https://www.gardeningknowhow.com/plant-problems/pests/homemade-aphid-control-a-natural-way-to-kill-aphids.htm
We had a company trim our lantanas and they didn't prune; they used an electric trimmer. Now they are all dying. We live in southwest Florida. Do you think the way they were trimmed is the reason?
As long as the stems are still green, they should be fine. The use of an electric trimmer shouldn't make much of a difference, unless they actually damaged the plant with choppy cuts (not smooth). These plants can normally be pruned back by a third to half their growth. For future reference, this article should help: https://www.gardeningknowhow.com/ornamental/flowers/lantana/lantana-pruning.htm
I planted a lantana over 2 months ago. Initially, it was blooming but it has not bloomed since then. It seems healthy and is growing but no blooms. I have it in a hanging planter. Any advice?
You might want to add some phosphorus to the soil to help with blooming. Bone meal is a good source for this, or use a fertilizer that has a higher phosphorus ratio.
I live in Fl. My lantanas stopped blooming. What can I do ?
Try giving the plants some bone meal. They may be lacking phosphorous, which a plant needs in order to bloom.
I planted the lantana about 4 months ago and it has not been productive with flowers at all, although it has grown very tall and bushy. Now the leaves have developed yellow spots. We are watering 2 times weekly, 20 min. each time. Any suggestions as what is going on?
There are a number of things that could be causing the yellow spots on the leaves, from pests to fungus. It could also be suffering from shock, as it's still rather newly planted. I would treat the plant with neem oil, which is an effective, organic pesticide and fungicide. Also, check the soil around your plants to see if it's staying too moist. If so, allow it to dry some. A soil test may be helpful as well in case there is something missing, which can then be remedied once you know the nutrients it needs.
My white lantanas are growing like crazy but have very few flowers on them. Can I do something to get them flowering? Thanks.
You might want to add some phosphorus to the soil to help with blooming. Bone meal is a good source for this, or use a fertilizer that has a higher phosphorus ratio.