Unanswered Questions

1,343 questions with no upvoted or accepted answers
12
votes
2answers
244 views

Which species and group of clematis is this?

Hi! I'm new to the site, and have long been wondering who I could ask to help me identify this clematis. I've done a bit of poking around online at various nursery sites hoping to find it, but I'm a ...
7
votes
3answers
6k views

What is this 3cm green caterpillar from northern California?

We have a number of these caterpillars in the yard. They are about 3 cm long. This is on the peninsula south of San Francisco, CA, USA. I initially thought of geometer moths but it seems to have ...
7
votes
2answers
139 views

Growing avocado from seed

The first time ever my avocado seed grew a root so when it got really long I planted it and then nothing and I thought I had killed it so while in the dirt I broke off part of the seed just to find ...
6
votes
0answers
74 views

Identifying/operating an automatic watering system

I recently bought a house built circa 1970 in France, and it came with an automatic watering system (date of setup unknown, so any time between then and now), controlled by this: I've been unable to ...
6
votes
1answer
95 views

Orange seedling leaf browning, curling, slowed growth? Please help!

I am a 1st time citrus planter. I planted an orange seedling in some potting mix after it germinated. Within the 1st few wks there was pretty impressive growth of leaves and height. it is now about ...
6
votes
1answer
98 views

Cycad - Zamia fischeri - large chunk from caudex

Advice please on what may have caused this large chunk to be taken from my specimen of Zamia fischeri? Background The plant was purchased about six months ago and I recently (three or four weeks ...
6
votes
1answer
761 views

Why would my citrus tree have dying twigs, burrowing insects and black scale?

My citrus tree is not healthy. The leaves are falling off, and the twigs are becoming brown and dying: In the middle trunk, where a large branch was pruned years ago, there seems to be some burrowing ...
6
votes
1answer
307 views

Tree identification

Can anyone say with certainty what this species of tree this is, found in Northern Michigan? The pic was taken today. Thank you in advance.
6
votes
0answers
979 views

Hydroponic Lychee tree suffering from brown leaf tips! Help!

my 4 month old Lychee seedling needs help! I started growing the Lychee tree in regular soil, and after about 2 months i desided that i wanted to try to grow it hydroponically. Ever since its first ...
6
votes
1answer
161 views

Plants turning purple and red?

I recently transplanted a bunch of corn flowers and they are turning purple and red. I also have lupins, tomatoes, and sun flowers turning red and purple. When I transplanted them i dug the hole twice ...
6
votes
0answers
256 views

Pinus sylvestris yellowing problem

I'm pretty new to gardening and I recently (~2 weeks ago) got a Pinus sylvestris 'Fastigiata' plant and I noticed that some needles started to yellow. Here are a few pics:- The yellowing is mostly on ...
6
votes
1answer
101 views

Roses in clay pot started to go bald

I purchased some roses in clay pots. They were very fresh and beautiful but after a while they were starting to go bald and their leaves turned yellow. What should I do? They are in open air and have ...
6
votes
1answer
182 views

This tree is growing in my yard - central VA zone 7 anyone ID? No flowers so far

This tree is growing wild in my yard about 10 feet tall now. It looked a little like an apple but not when I pick leaves and compare. It grew quite fast and has not flowered yet where most other trees ...
6
votes
0answers
316 views

Help with caterpillar identification

I found this caterpillar a few days ago, and at that time it was green with lighter green stripes running along its body, black spots on its head, and a few fine hairs. It had made a leaf of one of ...
6
votes
0answers
318 views

Are these primary or secondary verbena pests?

I posted before about the powdery mildew affecting my verbena plants. I have now observed that some leaves have died, and small (1 mm or less) insects are present. They're mobile so not eggs, white ...

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