Questions tagged [conifers]

Cone bearing, boreal to tropical, largely evergreen trees and shrubs, e.g., Pines, Cedars, Cypresses, Podocarps, Kauri, Firs, Larches, Hemlocks, and Yews.

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Will an arborvitae grow back after I cut the trunk?

I had this "horizontal" arborvitaes in the front yard of the house I just moved into. I wanted to replace them with flowers. I tried to unroot them but the roots go down just too deep and ...
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2 answers
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Has there been any research on the "take rate" of conifer cuttings?

So I can see that a conifer cuttings method can be done in August +/-. https://www.gardenersworld.com/how-to/grow-plants/how-to-take-conifer-cuttings/ Has there been any research on this "take ...
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What is preventing northern whitecedar (Thuja occidentalis) from growing from seed in regions south of its native range? Any way to grow it from seed?

In northern Delaware, southeastern, and south-central Pennsylvania, northern whitecedar (Thuja occidentalis) is widely planted in landscaping, and it generally thrives in these regions. I sometimes ...
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Is my spartan juniper sick?

Earlier this year (early April), I had a half dead tree removed from my yard and we planted some spartan juniper trees along our fence to replace it. I noticed this past weekend that one of them is ...
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Leyland Cypress dieback

Approx 3 years ago I planted a row of 13 Leyland Cypress as a screening hedge at the back of my garden (London, UK). Over the years the trees have been growing well and have approximately doubled in ...
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4 answers
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Should I worry about planting nonnative Norway spruce in NY?

I'm looking for the perfect tree to create a low maintenance living privacy hedge/windbreak in an approximately 100'x100' area. About 20' from one part of the area, water pools sporadically. I'm ...
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5 votes
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What type of conifer is this and is it OK near a house?

I need help identifying this conifer. Also, it is standing really close to a house (about 6-8 feet, some 2 meters). Can its root systems be harmful to the foundation or sewer line (which by the way is ...
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3 votes
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What caused the crazing under the bark of this conifer?

When the bark fell off of this dead conifer in the Pacific Northwest I was amazed by the pattern on the cambium (or is it phloem?). I assume some sort of insect caused this? If so, what kind? And ...
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Should I add more soil to my bonsai seedlings

I have three bonsai seedlings that are just about 3 months old. They are Norway spruces and appear to be doing well but I was wondering if maybe I need to add more soil (particularly for the third one,...
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How quickly can I expect my Goldcrest Cypress to grow?

We bought a Goldcrest Cypress today and I'm wondering how fast it would grow; I just don't get any clear (or even rough) answers from Google. Some more info: We are in South Africa, around 26 degrees ...
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Small conifer in pot identification

I bought this small conifer in pot yesterday at the garden center (pot size ~6 cm in diameter). I think it is some Juniperus species, but I am not sure. Does anyone know for sure what species this is? ...
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ID pine by cones and seeds

Can anyone ID a pine by its cones and seeds only? I collected some cones for seeds (starting material for bonsai). I know of a little field in the outer regions of Amsterdam, where there are some pine ...
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1 answer
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How do you go about identifying cypresses?

I'm living in the UK and recently gained an intrest for trees, the broad leafed trees are not that bad, but when it comes to the cypresses I still have no idea. I'm also pretty bad at some of the ...
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4 votes
1 answer
352 views

Can I prune conifers in the dead of winter?

Is it a bad idea to prune conifers when the ground is frozen solid? I'm thinking about going up about 7' on a 30' tall tree.
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4 votes
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Caring for noble fir seedlings (Christmas trees)

I am an amateur gardener turned Christmas tree grower. Before I cared for cacti (can't really underwater) and venus flytraps (can't overwater) and felt great that all my plants lived for many years. ...
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Can a very recently planted B & B cypress tree be moved 2'?

The Leyland Cypress is now blocking the view intended so we'd like to have someone move it a couple of feet to the left. Is this a cause for concern for the survival of the tree?
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Is this tree healthy?

We have this tree in our yard, is this mold? Is it treatable?
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Growing Ipomea near mid-sized conifer?

Is it possible, and is it wise if it is possible, to grow Ipomea tricolor 'Heavenly Blue' so that it protrudes through mid-sized (9m/30ft) conifers? I think it could be an interesting aesthetic ...
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5 votes
2 answers
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Exposed roots in a juniperus bonsai, plus probable fungi problem

A friend of mine has a juniperus bonsai similar to this, but it is not doing well recently. I noticed its top roots are now outside of soil, which I find not good, and I am about to suggest my friend ...
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3 votes
1 answer
119 views

What is this dense erect sculpture-like bluish conifer?

Actually, there are two of the same species: They are 5m high at this time. Needles/scales are really small: This is in zone 8a.
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3 votes
1 answer
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Is the fragrant substance in chopped Thuja leaves harmful to human skin?

I did some pruning of a couple of thujas for the first time in my life, and I noticed that the chopped thuja leaves have a strong scent that is different than the scent of leaves of other conifers. ...
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2 votes
1 answer
850 views

What to do with surplus thuja leaves after pruning?

We all know that there are tons of thuja leaves after pruning thuja hedges. Can thuja leaves be used as mulch (perhaps for acid-loving plants, let's say young pines, or vaccinum)? What if they are ...
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2 votes
1 answer
936 views

The bluest conifer of all time

I am creating a group of blue conifers in a small corner of my garden. A woman from a nursery I occasionaly order plants from claims that there is no bluer conifer than Picea pungens 'Edith'. Is she ...
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2 votes
1 answer
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Designing small conifer compositions

I would like to have a couple of conifer groups in my garden like these: How to design them?
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1 vote
1 answer
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What is the cultivar name of this golden-leaved juniperus?

What is the cultivar name of this juniperus:
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3 votes
2 answers
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What is the exact latin name of these juniperus cultivars?

I am interested in 'Skyrocket', 'Blue arrow', and 'Blue haven' Juniperus cultivars. Most of the time, internet sites list them as belonging to Juniperus scopulorum species. However, sometimes they ...
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2 votes
1 answer
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Juniperus virginiana and producing berries

As you may have noticed from other questions of mine, I am in a process of transforming my yard into a bird garden. (This is a long-term multi-year enterprise). One of the most attractive plants for ...
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3 votes
2 answers
323 views

What is this ornamental conifer and is it dying?

This ornamental conifer, which looks like some sort of blue spruce, has lived in this spot since at least spring of 2014, when it looked like this: I live in SE Pennsylvania, and it has appeared ...
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4 votes
2 answers
7k views

Making a leylandii hedge more bushy and thick

I have this long, very tall leylandii hedge, I guess the taller ones are approaching 40 feet high and one for thick trunks. Especially the older ones are quite sparse... Fine as trees but this is my ...
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4 votes
1 answer
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Why are my spruce trees' very long leaders bent over?

I have 3 Black Hills Spruce and one Australian Spruce with long Leaders. Two of the Black Hills Spruce are bent over. 1. What causes this? 2. What can I do to help the tree?
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5 votes
2 answers
189 views

What plants are these dwarf coniferes? How can I improve my case?

Can anybody help me to identify these plants ? Or recommend me something similar? I am trying to fix the below. Suggestions are welcome (what you see below was done by the previous owner-this is a ...
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4 votes
1 answer
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How can I clone (propagate) a juniper tree from a stem?

I'm experimenting with vegetative reproduction, i.e. getting stems from a thin branch and replanting them after the branch develops some roots. I got a couple of stems from a nice Juniper tree beside ...
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7 votes
0 answers
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water use for blue spruce outside natural environment? [closed]

I live below the natural range of blue spruce in a hot grassland habitat. How much water does a blue spruce need to thrive in this hot dry landscape?
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1 vote
2 answers
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What type of conifer is this?

While I was on my holiday in Greece, I passed by some nice looking conifers at one resort. I'm trying to find out what type they are. At first I thought they are some kind of thuja but now I'm not ...
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2 votes
1 answer
357 views

Is trimming up the branches of a conifer a bad idea?

I've seen people cut off lower branches on conifers so they could put stuff under it. Is this a bad idea for a 30 foot tall tree? Instead of hostas doing low PH food bushes under pine trees:
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4 votes
1 answer
171 views

Can I get a conifer to grow from a ball of roots?

Is it possible to get a new conifer from a ball of roots that I planted after manhandling the removal process to get some roots out? Example: side of part A:
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3 votes
1 answer
58 views

Will ground cover conifers grow branches on a former house side of the plant?

I was given a ground cover conifer for free, and accidently planted the side with branches in the wrong direction. Should I replant it, or let it grow out as is?
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17 votes
5 answers
2k views

What is this cone-shaped tree?

This tree is growing in a garden in Johannesburg, South Africa. I'm pretty sure it's evergreen (turns out it's not). I'm not sure whether or not it is indigenous to this area. Click on pictures for ...
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7 votes
1 answer
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Keep conifers green in winter

I live in zone 3, central Alberta. Temperatures are well below freezing for 4-6 months of the year, with cold snaps lasting weeks between -20 and -35 C. I have noticed that some conifers go quite ...
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6 votes
2 answers
686 views

How much seasonal, internal die-off of Arborvitae is natural and expected?

How much "natural" (i.e., without damaging factors) die-back from the inside of an (otherwise healthy) arborvitae hedge should be expected each year? Stated another way, would an arborvitae in ideal ...
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1 answer
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Is the size of a conifer tree's root system proportional to the size of the tree

Is the size of a conifer tree's root system proportional to the size of the tree? By the same token will limiting tree size also have an effect on root system size?
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7 votes
1 answer
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When should I harvest balsam for balsam bags?

I've found plenty of information about when to harvest balsam for making wreaths, but I really don't care about if the needles stay attached - I'm actually interested in if there are specific times ...
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2 votes
2 answers
99 views

What's wrong with my Austrian pine and how can I fix it?

Lack of water is not the problem. We've had a very wet spring here in Chicagoland. Is this due to an unfavorable soil pH or something like that? click on picture for full size
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3 votes
2 answers
820 views

White spruce problem (yellow needles)

I bought this small spruce for Christmas (the label said it will grow up to 1m tall), it's a Picea Glauca 'conica'. I recently replanted it in a bigger container, because it looked quite constrained,...
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4 votes
3 answers
733 views

When and how do I trim these bushes?

We moved in to a house with bushes trimmed neatly, but well over the sidewalk. Do I trim this back all at once, or over a long period of time (months? Years?)? We are in southeast Michigan, and will ...
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6 votes
2 answers
6k views

How far apart should I space Thuja 'Green Giant' evergreen trees?

If I wanted to plant several Thuja plicata x standishii 'Green Giant', how far apart should they be placed, or does it matter? Some evergreens seem to like being planted close together (and growing ...
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2 votes
0 answers
345 views

How can I prevent my arborvitae trees from turning brown and dying every time I plant them? [duplicate]

I have replaced these Arborvitae trees 4 times. They keep turning brown. I cut out parts of the trees behind them, so they would get more sunlight. I Am watering them. Could it be a fungus? How can I ...
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9 votes
4 answers
6k views

Are my Emerald Arborvitaes recoverable?

I bought 31 thujas a couple of months ago and some of them are really struggling. I installed a drip line a week ago, but am wondering if these trees are completely dead. Here are a bunch of ...
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3 votes
1 answer
6k views

Why are the leaves turning yellow on these conifers?

I have two kinds of conifers in the front yard. They are in a spot with eastern exposure, but the sunlight is somewhat blocked by a big house on the south side of the yard. They get a lot of shade in ...
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2 votes
1 answer
779 views

Dwarf Alberta Spruce Winter Burn [duplicate]

I have a Dwarf Alberta Spruce which is showing signs of worse-than-normal winter burn. Not only have the needles on the south side of the tree browned, but the new buds on that side also appear to ...
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