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6 votes
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Making a leylandii hedge more bushy and thick

It seems your trees (yes, Leyland cypresses are trees) were never properly trimmed, more likely planted once and then left alone. Which means they behaved like all trees planted closely together: ...
Stephie's user avatar
  • 16.9k
5 votes
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What is this ornamental conifer and is it dying?

This is the Bird's Nest Blue Spruce. I think. Picea abies 'nidiformus'...grins...If this went down that quickly, I'd look at the last fertilization (do you have an outside maintenance company), Blue ...
stormy's user avatar
  • 40.5k
4 votes
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How can I clone (propagate) a juniper tree from a stem?

At school for propagation of cuttings we were told "Cool tops, misty middles and hot bottoms." The "hot" part is there for dramatic effect; warmth is the point. The critical thing is to get the roots ...
Colin Beckingham's user avatar
4 votes

What is this cone-shaped tree?

There are two trees that look very similar, on is the dawn redwood and the other is the bald cypress, both trees are deciduous conifers. the main difference is the growth habit is slightly different, ...
Grady Player's user avatar
  • 5,202
4 votes

What is this ornamental conifer and is it dying?

A big mistake many people make when planting trees and shrubs is to either plant them too deeply or mulch them too incorrectly. The fact that you had to scrape soil away from the trunk to get a photo ...
Jurp's user avatar
  • 20.4k
4 votes
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The bluest conifer of all time

It's hard to say - human colour perception varies between individuals,so what you might think is the bluest one, someone else won't.Your best option is to go and look at them in real life, in good ...
Bamboo's user avatar
  • 135k
4 votes
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Designing small conifer compositions

One group won't work to make this look. You would need at least 3 groupings of the same species...5 groupings using the same species but differing amounts of each species, some groups without one or ...
stormy's user avatar
  • 40.5k
4 votes
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Is the fragrant substance in chopped Thuja leaves harmful to human skin?

Maybe, maybe not - some people may experience contact allergy symptoms on the skin from any coniferous plant, including Thuja. Thuja contains oil which has volatile constituents, and its resinous ...
Bamboo's user avatar
  • 135k
4 votes
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Can I prune conifers in the dead of winter?

Black thumb the middle of winter is just fine to prune anything. I prune a little on any and all plants any old time when I've got the pruners sharpened sterilized and in my hands. I love to prune. ...
stormy's user avatar
  • 40.5k
4 votes

Has there been any research on the "take rate" of conifer cuttings?

That extract you quote from applies to deciduous trees, not coniferous ones. Coniferous trees are propagated using semi ripe cuttings from the current season's growth, preferably taken in late summer, ...
Bamboo's user avatar
  • 135k
3 votes
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What is this dense erect sculpture-like bluish conifer?

Looks similar to https://en.m.wikipedia.org/wiki/Chamaecyparis_lawsoniana. Mine is ‘Blue Surprise’, quite blue indeed, and a favorite. [Edit] My guess is foliage differs between cultivars. See my ...
Larry Osterman's user avatar
3 votes
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What to do with surplus thuja leaves after pruning?

Pretty much any organic material can be used as a mulch or composted, so yes you can do that. I personally toss stuff like that into my long term compost pile that I let break down for a few years ...
Tyler K.'s user avatar
  • 1,729
3 votes

Making a leylandii hedge more bushy and thick

Everything that Stephie said is fine. However, the trimming would most likely work for the right side of the hedge (right side of the last photo), but for the left hand side, it would be a difficult ...
VividD's user avatar
  • 5,850
3 votes

Why are my spruce trees' very long leaders bent over?

Sometimes fast growing conifers put out lots of growth into the leaders and the soft new growth bends over. Usually it straightens on its own. If it hardens while bent, you can head it back a little. ...
J. Musser's user avatar
  • 51.9k
3 votes

How far will pine tree roots spread?

I am a certified home inspector, Mr Home Check, and former Realtor. There is no need to cut down the tree until you see where the root system actually is. It has been there for quite some time and ...
Michael Floren's user avatar
3 votes

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?

Thuja occidentalis is not too keen on growing from seed, which is why it's usually propagated by cuttings. The best average germination rate from shop bought seeds is about 37%, and estimated at ...
Bamboo's user avatar
  • 135k
3 votes
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Drying out of half of a norfolk island pine?

Norfolk Island pines are widely sold but not an easy plant to keep looking good in many homes. They prefer to grow in bright indirect sunlight where it is moist and cool which is unlike many homes. ...
kevinskio's user avatar
  • 61k
3 votes

Shaded columnar (irish) yew: to hedge or not to hedge

Lucky you, having a yew hedge. That's quite a desirable feature to have in your garden. Yew is a remarkable plant, being shade tolerant and one of the few conifers that will regrow when cut hard back. ...
Peter4075's user avatar
  • 4,067
3 votes
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Shaded columnar (irish) yew: to hedge or not to hedge

Yew grows rather slowly. You can cut it back, and it will fill in, but it may take 5-10 years to do so. If you can cut back without removing all the foliage where you cut, recovery may be somewhat ...
Ecnerwal's user avatar
  • 25.7k
2 votes

What type of conifer is this?

On the limited information available it seems the possibilities are numerous and, given the OP seems not to have revisited in nine months, little point in requesting further details from him. Anyway, ...
pnuts's user avatar
  • 96
2 votes

How far will pine tree roots spread?

The roots of the pine trees in my yard have grown on top of the surface and caused a crack in the side of my house. Pine trees cause lots of problems. Cut the pine tree down would be your best ...
Sadie Pierce's user avatar
2 votes
Accepted

What is the exact latin name of these juniperus cultivars?

About the two scientific names: (this answer the botanical nomenclature part of the question, not the cultivar nomenclature, which has a related code and so rules) Juniperus scopulorum and J. ...
Giacomo Catenazzi's user avatar
2 votes

What is the exact latin name of these juniperus cultivars?

If you give any credence to the RHS, both Juniper 'Skyrocket' and 'Blue Arrow' are now listed as Juniperus scopulorum, with Juniper virginiana listed as a synonym, see here https://www.rhs.org.uk/...
Bamboo's user avatar
  • 135k
2 votes

Juniperus virginiana and producing berries

Juniperus virginiana are largely dioecious, but occasionally monoecious, so it's safest to select male and female plants if you want to be sure of fruits/seedcases http://dendro.cnre.vt.edu/dendrology/...
Bamboo's user avatar
  • 135k
2 votes

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

You are saying you like the first picture and the second is the actual picture at your home? Minime You are feeling and seeing the problem. The need to unify. We were taught that humans are only ...
stormy's user avatar
  • 40.5k
2 votes

Growing Ipomea near mid-sized conifer?

The biggest problem is being able to plant it close enough to your trees so that it can climb up them. Where you are this plant is only an annual, as it is in the UK, and reaches about 2.5 metres in ...
Bamboo's user avatar
  • 135k
2 votes

Exposed roots in a juniperus bonsai, plus probable fungi problem

Photo would be useful, but essentially, a root flare visible at the base of bonsai is quite normal and actually often encouraged by certain pruning techniques when root pruning over time. It rather ...
Bamboo's user avatar
  • 135k
2 votes
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Caring for noble fir seedlings (Christmas trees)

You biggest mistake is planting in soil in a pot filled with (potting soil or garden soil?) way too large for a seedling. Seriously. You have to start your seeds in tiny pots like 2" high by 1" wide ...
stormy's user avatar
  • 40.5k
2 votes

Small conifer in pot identification

Junipers have a characteristic odour when the foliage is crushed. It sure looks like a juniper. Different junipers are grown for their colour, shape, size. The colour you already know - the shape is ...
Colin Beckingham's user avatar

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