Should you use cedar mulch on top to help keep moisture?
Mulch is always a good idea. It maintains soil temperature, keeps weeds at bay, and cedar mulch is known to prevent pest infestations.
My petunia and pansy leaves turned yellow with green veins and are now all yellow. What nutrient are they missing?
This article will help you.
https://www.gardeningknowhow.com/ornamental/flowers/petunia/yellow-leaves-on-petunia.htm
I have two pots with these flowers and they have not flowered since I brought them home from the nursery. They receive sun the majority of the day, but no flowers have bloomed. What can I do to get flowers growing?
Lighting and poor fertilizer are the two most common reasons for Petunias not blooming. These articles may help you:
https://www.gardeningknowhow.com/ornamental/flowers/petunia/petunia-plant-no-flowers.htm
https://www.gardeningknowhow.com/ornamental/flowers/petunia/wave-petunia-plants.htm
Review the care and planting information in the article below.
Check your watering schedule, keep the soil moist, but never soggy.
A balanced fertilizer can be used every couple of weeks.
https://www.gardeningknowhow.com/ornamental/flowers/petunia/wave-petunia-plants.htm
My hanging basket of petunias bloomed nicely for a month, got a little dried out, then came back with good foliage but no blooms. What should I do? Would like them to bloom again before end of season. Thank you!
Bone Meal can help boost flowering.
Here is a link with more information.
https://www.gardeningknowhow.com/ornamental/flowers/petunia/petunia-plant-no-flowers.htm
I've got these bugs on my petunias as soon as they began blooming. I've been using neem oil but it's only marginally reduced the bug infestation. Any recommendations?
If you are able to see the actual bugs, you'll be able to identify them using the linked pictures on the following university website:
http://ipm.ucanr.edu/PMG/menu.invertebrate.html
Insects including caterpillars, thrips, and earwigs can all feed on petunias. So can non-insect pests like slugs and mites. If the problem is an insect, you can use an organic or conventional garden insecticide. Here are some of your options:
https://www.gardeningknowhow.com/special/organic/natural-home-pesticides-organic-garden-pest-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/white-oil-insecticide.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/pyrethrum-in-gardens.htm
What pest could this be? I see a spiders on one of them, but 30+ ft away, a different petunia has same eggs or whatever on it. What could I spray to get rid of, or help the plant to get rid of this? What could this be?
There is a caterpillar called tobacco budworm that can lay eggs on petunia. Here is more information:
http://entnemdept.ufl.edu/creatures/field/tobacco_budworm.htm
The best plan at this point would be removing and discarding the affected leaves from each plant. If you get them all, the bugs will never get to your plants.
Caterpillar frass (poop) is usually black and can be mistaken for eggs. In this case you would see damage to your petunia leaves. Hand removal of the caterpillars and/or neem oil is recommended:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
Petunia seeds themselves are usually black and can get caught on the leaves of fuzzy varieties.
Can anyone tell me what this is? It is some sort of fruit, I think. Looks like a tiny tomato. The size of a small pea. Translucent enough to see the seeds inside and it looks like a little brain. I found it in an outdoor flowerpot when I pulled my dead petunias out of it. There were several of them in the dirt. I did not see any in any of my other petunia pots. I have day lilies near there. Could have been from a weed. Idk.
This seed pod does not appear to be from Petunias or from a Daylily.
Seeds can blow in or even be carried by birds into a garden.
I cannot make an identification in this case.