A plant that lives for two or more years.

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1answer
22 views

How can I ensure that hellebores in 6" nursery pots survive the winter?

Earlier this year, I bought some hellebores (Helleborus niger hybrids) to plant in a shady spot near my Magnolia tree. I promptly forgot them, partly because of being ill for a couple of weeks, partly ...
3
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1answer
45 views

Can I save the berries from a Big Blue Liriope (Liriope muscari) and plant them next spring?

I have a big blue liriope (Liriope muscari) in my yard, and the flowers have changed to berries. I imagine the normal propagation method is to split the adult plant after it grow large enough, but if ...
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2answers
72 views

What's the difference between annual, biennial, and perennial plants?

Before deciding whether to purchase a plant, and how best to plan where to place it, the basic knowledge of how long it lives and how often it blooms is a necessity. What's the difference between ...
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1answer
56 views

Can I dig up a wilting Begonia in the garden and turn it into a houseplant?

I live in Massachusetts and have some begonias that have been very happy all summer planted in a mostly shady area of my garden. The recent cold nights have caused the flowers to fall and the leaves ...
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1answer
68 views

What is this carefree succulent flowering potted plant?

Anyone know what plant this is? It was planted in a large pot a long time ago by a friend. The dirt in the pot has not been changed for years! It blooms around the summer time and stays till mid ...
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1answer
45 views

How do I breed Black eyed Susans?

I've recently acquired a nice-sized Black eyed Susan (Rudbeckia hirta) plant. But unfortunately I've only got one, when I would like to have several. How would I go about multiplying this plant?
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1answer
40 views

What's the best way to transplant Malva sylvestris Zebrina?

This is a follow-up question concerning Malva sylvestris 'Zebrina'. The plant has grown from seeds to more than 50 cm in height. I did not expect such a large specimen and would like to keep it around ...
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1answer
69 views

Which grass is best suited as an indoor perennial?

I would like to decorate our living room with a strip of grass. Which type should I grow? The requirements are as following: should be a perennial or at least grow for a year or so slow growing, ...
4
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1answer
55 views

Why does my garden centre say these plants are annuals?

I'm in the UK (so hardiness zone 8/9), and my local garden centre is selling Chrysanthemums and Michaelmas daisies, labelled as "one season only". I'm sure as a kid my gran had (the same) ...
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2answers
237 views

Why are my hibiscus buds & leaves randomly turning yellow and dropping off?

Besides the random yellowing and dropping off of leaves and buds, the plant is otherwise putting out new buds and flowers pretty well. What might be causing this? The plant is in partial shade ...
4
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1answer
165 views

What is this 2' high plant with curved spikes of white flowers, growing in eastern Massachusetts?

Please identify this plant. It is about two feet tall and thriving in the shade of large trees near the edge of a small street.
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4answers
101 views

What are some recommended perennials to grow under large spruce trees in an area of about 350 sq. feet?

I have a small area which I would like to fill with (hopefully perennial) foliage plants, to green it up. I was thinking a variety of different hostas would fit the bill. If this was your bed, what ...
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2answers
78 views

What's going on with these Snow in Summer plants?

I planted about a dozen Snow in Summer flowers about 2 months ago and most of them are turning brown in the center. I don't think this is a water issue, but perhaps... the ground doesn't drain very ...
4
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1answer
48 views

What should I do to make my strawberry a perennial?

http://homeguides.sfgate.com/care-tristar-strawberries-45860.html says that Strawberries grow as perennials in U.S. Department of Agriculture plant hardiness zones 3 through 9, depending on the ...
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1answer
96 views

Can somebody try to identify this potential perennial?

I was cleaning out some gardens and am not sure what this is. Is it a weed or not?
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1answer
129 views

What is this plant with spiky leaves found on a beach in Indonesia?

Some time ago I found a plant on Depok Beach (Yogyakarta, Indonesia). This is what it looks like: It looks like spiky leaves that grow from its branches. The leaves are actually quite hard: you ...
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1answer
42 views

When should Bee Balm bloom in Zone 6 (it did not bloom last year)?

Two years ago we planted some bee balm. We trimmed it back in early March last year and it never bloomed, though the plant was otherwise healthy and bushy. We trimmed it back again this year. Is ...
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1answer
305 views

What's eating this Weigela Shrub?

I planted some Fine Wine Weigela shrubs last fall. They seemed to be doing OK over spring then in the summer they took a turn in the wrong direction. They lost their color and are a light green. ...
3
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1answer
399 views

What is causing my lavender's leaves to turn grey and wizen?

I am trying to grow a lavender plant on the windowsill of my apartment in Brooklyn. I got this more succulent lavender after some more delicate french lavender had died on the same sill. This plant ...
3
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1answer
91 views

Help on identifying a sharp leaved white-(another variety of it is red-)flowered perennial

In my garden I have a perennial (at least in a second year) in two varieties (one white-flowered, one red) of the scrub pictured below. I collected seed from it last year and I got seedlings from it ...
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1answer
374 views

What is this low growing square-stemmed plant in my lawn?

I have a small, dense, spreading herbaceous perennial plant in my lawn. I don't have anything against it, but I would like to know what it is. It has slightly square stems and rounded leaves. It has ...
4
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1answer
177 views

What would be a good “cat grass” for the central Texas heat?

So I can buy the little pots of "cat grass" or even the grow kits at my local pet store, but I thought it would be more fun to have a little patch of it growing in the yard that (hypothetically) would ...
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1answer
257 views

What is the medium-leaved, thick-stemmed plant?

This plant was at the end of driveway, getting tossed by a previous owner. I'd like to care of it but I have zero idea what it is. Does any one know a likely candidate?
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1answer
144 views

Is Poke Milkweed nice or nasty?

I am growing this from seed: Asclepias exaltata which is not the poisonous pokeweed Poke Milkweed Height .5-1.5m Zone: 4 The grower, Gardens North, claims it is: Found in the wild in rich ...
2
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1answer
117 views

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 ...
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1answer
195 views

What flowers and shrubs will grow without outside help?

I would like to plant some shrubs and/or flowers in a mostly wooded area behind my house (in NE Oklahoma). What are some good candidates that are (1) cheap, (2) perennial, and (3) hardy enough to ...
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2answers
1k views

How can I tell what animal is eating my plants?

Many of my perennial garden plants have been getting eaten by some animal. Possible culprits include deer, rabbits, and groundhogs. I would like to control them, but I have to know what I am ...
6
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2answers
612 views

How do I prepare a chili plant for a second year's growth?

I have finally managed to make one of my chili plants (variety unknown) live into its second year! I've kept it indoors so far this winter. As it will be spring in a couple of months (I'm in the UK), ...
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3answers
1k views

Hardy edible perennials that are easy to propagate?

I'm looking for hardy (USDA Z4/Z5; -15F winter lows) perennials (or low maintenance reseeding annuals) that are easy/reliable to propagate either via cuttings, division, or seed. The growing season is ...
5
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1answer
381 views

What is this plant, which has a spreading root system and purple, crinkled petunia-like flowers?

Click to enlarge This is a hardy perennial that grows up to 5' tall. It has a spreading root system and purple, crinkled petunia-like flowers. What is it?
10
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3answers
1k views

What are some tall, narrow perennials suited for dry soils, sun & shade?

I have an herb garden that stays quite dry. Although this garden is in the notoriously wet Pacific Northwest (USDA zone 8a), it is against a two story south-facing brick wall, under a large overhang, ...
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1answer
196 views

Are goldenrod cultivars manageable or troublesome?

We have a tough dry spot in the garden (USDA zone 4) about 2' x 5' where a goldenrod cultivar would go nicely. The native species, although attractive, has a tendency to seed freely and be almost ...
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2answers
152 views

Are chilis an annual plant?

Are chili plants an annual plant? I have read on the web that they are perennials. But mine have never lasted more than a year.
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3answers
16k views

Can dahlias be grown as perennials?

The wikipedia article on dahlia says that they are perennial plants. However, the dahlia section at my local garden center claims (in their little info booklets) that they are annuals. Upon further ...
11
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2answers
957 views

Which herbs can be grown as perennials?

What are some herbs that are perennials, i.e. they return and grow the next season? I'd like to keep a garden of herbs around for cooking.