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Questions tagged [perennials]

A plant that lives for two or more years.

A plant that lives for more than two years - i.e. not an or .

In horticulture, the term is often used to refer to only herbaceous perennials (those that die back in Autumn and then grow again from the root stock in spring), although technically woody plants such as and are also perennials.

Use this tag for questions about perennials in general. Questions about specific plant families or species should use the appropriate tag for the family or species.

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Perennial geranium collapses in late spring

How can I care for this plant differently so it doesn't collapse in on itself? Do all geraniums fall in on themselves? Every year these geraniums grow like crazy and get full, tall and beautiful like this... ... and then at some point it will rain…
doub1ejack
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Egyptian walking onions; perennial how?

Are Egyptian walking onions strictly perennial (by this I mean that the same plant base will regrow the next year) or only perennial in the sense that they fall over and replant the bulbils as “new” plants?
jcoleman
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Can I grow low-growing heathers in containers with soil depth of 10cm?

I am building a small shed with a heather/heath roof using low growing varieties that reach 10-15cm. I plan to use 4 separate 60x40cm Euro trays, lined with soil barrier, so that I can lift these off individually to move the shed for maintenance.…
Lindz
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Do you know what this wild perennial is?

Do you know what his wild perennial is? Zone is 8a, central Europe. Photo taken mid-May. Removed from the ground because of fence construction. Is it worth transplanting?
VividD
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Is my choice for edible perennials for balcony good?

I'm looking to expand my balcony garden. I don't want to go through the trouble of getting new plants every spring so I am looking at cold hardy (-16°C is about the coldest I've seen here this winter) edible perennials. A few things a piqued my…
Kempeth
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looking for name for this flower

Can somebody tell me the name of this flower? Thanks
Hilde Stapgens
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What are differences between Echinacea purpurea and Echinacea angustifolia?

One of my most important gardening goals for this year is establishing echinacea in several parts of my garden. So I ordered several bags of echinacea seeds from a seed shop. (I actually didn't pay attention on the exact latin name) However, I just…
VividD
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What tulips are best for perenniallizing in a clay-base soil?

I have tried several times to plant tulips and have mixed results. They all do well the first year, but after that some varieties consistently die and others thrive and spread. After a little research, I found that this is common among Holland-grown…
J. Musser
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Long lived plant identification

This plant has been alive for at least 25 years. I know this for sure, because it was here when my parents moved into this house when I was born. No one knows what it is. It has pink clusters of flowers when it blooms, not sure what time of year.…
Ace42292
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What is this small, evergreen perennial in zone 6b?

This is 2 stems, each with 3 leaves. The leaves are thick and stiff with serrated edges. The leaf is about 2". The whole thing is about 2" high. A few of these have popped up in the garden. This one has been here for about 3 years and has only…
224windsor
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What kind of grassy perennial plant is this?

This plant was put in by a builder. It has a central group of grass-like blades. In year 2, it has sent out offsets and spread into the surrounding area. The smaller groups are connected to the central root system. What kind of plant is this?
Curious Blueprints
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Is it possible to transplant irises without the rhizome?

I bought a house and put some raised beds in the yard, on top of what we thought (in very early spring) was just lawn. It turns out there were irises (small purple ones, I don't know the variety) there. They now grow up through the raised bed, and…
CostUnknown
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Hoya care - will it ever flower again?

Oh, the things I have done to my mother-in-law's Hoya plant: First, I watered it weekly. Neither the plant or the mother-in-law liked that. Then I had the audacity to re-pot the root bound mess. I can't win with this plant. It needs a level of…
TheGrumpyTurtle
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Should perennials purchased at a greenhouse nursery be acclimatized before planting outside?

Most local nurseries in my area keep perennial plants outside during the summer months. There is one nursery which grows and keeps everything inside a greenhouse all the time. In zone 4 or 5, does this mean that those perennials should be…
Gilles
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What are these flowering perennials with white flowers?

What are these flowering perennials with white flowers (growing in a yard in Northeast Ohio)?
Michael T
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