Questions tagged [perennials]

A plant that lives for two or more years.

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1answer
468 views

Are these small hairy leaves first true leaves of my rudbeckia seedlings?

Are these small hairy leaves first true leaves of these seedlings? The plant in question is Rudbeckia hirta.
5
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2answers
1k views

What is this whitish feather on my Echinacea seedlings?

My multicell container with Echinacea seeds was covered with a transparent nylon cover for several days, and I just removed it, and spotted an unusual thing. Take a look at this white stuff in the ...
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1answer
527 views

What is it best way of starting Eryngium giganteum umbelliferae from seed?

I was attracted to the wild, fantastic forms of Eryngium giganteum umbelliferae (also known as Miss Willmott's ghost), so I ordered a pack of seeds from a local seed shop: I also received the ...
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2answers
549 views

What is the correct way of placing echinacea seed in soil?

Some of the internet sites claim that echinacea seed should be placed at a small depth of 1/4 inch into soil, but not covered at that time, the reason being that they need light to germinate. And just ...
4
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2answers
6k views

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 ...
2
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2answers
567 views

What to do with these black-eyed Susan seedlings?

I started black-eyed Susan seeds ten days ago: (I just sprinkled tiny seeds over grid-type container filled with "soil for flowers" from the supermarket) You can see multiple new plants in almost all ...
6
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1answer
152 views

What should I consider before vacuum-sealing seeds for storage?

This year I have harvested more seeds than I will use next spring. I plan to vacuum-seal them and I want to know if, except for drying them really well, I should consider anything in particular. ...
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1answer
37 views

Getting flower bed ready for planting next year

I am preparing an area appr. 5m by 1m to become perennial garden bed next year. I am going to plant plants gradually throughout next year. I am currently using top soil from elsewhere in the garden ...
2
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3answers
981 views

How to remove spikes from Echinacea purpurea seeds?

In order to collect the seeds from a stem I have to remove the spikes. Wearing gardening gloves doesn't work because I can't take a grip on the seeds when wearing the gloves. With my bare hands this ...
5
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2answers
95 views

What is this daisy with narrow white petals and a yellow center, that the local deer won't eat?

This daisy popped up wild. It has narrow white petals and a yellow center. The local deer don't like it. It's located in the central California coast. The ground is dry, rocky and semi-shaded. ...
4
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0answers
217 views

What species of Sempervivum is this?

I have received these plants hardy to zone 6b, minimum temperatures of -23°C (-9.4°F). I know there are numerous species of Sempervivum that look alike, but I kind of hope somebody knows some details ...
6
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1answer
183 views

Recommendations for removing a plant from a perennial border

I'd love some recommendation on the best way to remove Lysimachia nummularia 'Aurea' from a perennial border. A little background: The border never really goes fully dormant, and is layered with ...
4
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1answer
85 views

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 ...
3
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1answer
130 views

What is this bright yellow daylily with six narrow petals that curl at the ends?

I have a number of varieties of daylilies in a wildflower garden in Massachusetts, USA, zone 6a. There are at least five, although some may be the same variety in different colors. They were all here ...
9
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3answers
2k views

What is this pungent plant with spikes of purple flowers?

This plant is flowering in our garden. The leaves are gray/green. It has small spikes of purple flowers all over, which are a few inches tall. It has a peculiarly rich smell which I rather love, but ...
4
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1answer
104 views

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 ...
2
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1answer
41 views

Raising bed of Peonies

I have a bed of flowers which I would like to raise by 2-2½ feet (61cm - 76cm) with the soil added to the top, but I am concerned about the idea when I have well established Peonies. Is it possible ...
6
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2answers
115 views

What is this small field plant with a tuberous root?

This plant was collected in a field South-Central Europe. Assume the height of the photo is 20cm. These are all small herbaceous plants. The ball next to it is the root. It has small bag-like ...
3
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1answer
1k views

I need advice about a Dipladenia (related to Mandevilla)

I need advice about a Dipladenia that I bought today. I actually thought that it was a type of Mandevilla, until I got it home and Googled the name. It is in the same family, and needs the same type ...
4
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1answer
89 views

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 ...
3
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2answers
75 views

What are typical and perennial garden green and flowering plants?

I will be edging my yard this summer and not sure what plants to plant on my edge. This is my first time doing this. I don't want to overwhelm the edges but enough plants to make it look full. I am ...
3
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1answer
76 views

What is this perennial plant which survives in the Sonoran Desert naturally?

Plants native to the Sonoran Desert require watering every 6 months. The following perennial plant, which I am not sure is native to the Sonoran Desert, was found to thrive in the Sonoran Desert ...
4
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2answers
2k views

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) ...
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0answers
77 views

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 ...
5
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1answer
69 views

What is this perennial, mauve flowering herb?

I am trying to identify flowers by the photo I have. Everything I know is that they are: Perennial flowers Spring flowers Grow in Eastern Europe I have been trying to find them using Google ...
3
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1answer
153 views

Why my White Bell Peachleaf Bellflower's leaves are curling up or leaning upwards?

I bought this plant on March 15, 2017 at RONA Garden Centre. Yesterday when I planted it in this pot the leaves are all like natural, no curling sign/stem moving at that any point. But today on March ...
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1answer
55 views

What are these new trunks thats emerging from this Red Cherry Currant?

I noticed that there was some new trunk-looking stuff that's coming around from these sides at the bottom to the middle on the thick stems but not on the top thin branches. What are these, are they ...
3
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1answer
104 views

Can I start fuchsias from root cuttings?

I love fuchsias and am wintering one over indoors for the first time. It's doing great (3 months in), but when I trimmed it I had to prune the roots as well as the leaves and so I was wondering if it ...
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3answers
10k views

How do I prune Verbena bonariensis?

In my region, Verbena bonariensis is a perennial rather than an annual. It's getting quite tall, with some close to 8 feet even though it's not supposed to top 6 feet, and in the wind has taken a ...
6
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1answer
69 views

Do I cut back all herbaceous perenials in fall?

I live in zone 4. I have been instructed to cut back some of my herbaceous perennials plants before winter. Should I do this to all herbaceous plants? If not, how do I know which ones to cut back and ...
3
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1answer
2k views

When should I remove the spent stalks on my daylilies?

This is related to my previous question about deadheading daylilies. I did a good job of pruning some, although I neglected others. All of the flowers have gone by and I'd like to know when to remove ...
5
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1answer
139 views

Can a Mexican sage survive losing all its stems?

We planted several Mexian sages (Salvia leucantha) 3-4 weeks ago. They had taken very well to our hot, dry weather (Sacramento, California - Zone 9) and being watered on a drip system. Here's a ...
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2answers
860 views

Should I deadhead my daylilies?

In a section of our yard, I have a small field of beautiful daylilies, nine varieties in all. (I can't take credit for them, as they were here when we bought the house a few years ago!) True to their ...
7
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3answers
18k views

What is this six-petaled white flower with long narrow leaves?

Growing on the edge of my yard I have a small clump of perennial plants that produce small white flowers in late May or early June. The flower itself is white, with six petals, and they are produced ...
4
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1answer
329 views

Do any bulbing bunching onion varieties multiply like potato onions?

Do bulbing bunching onions multiply like non-bulbing ones and potato onions, do? According to one source, there is a non-bulbing variety that does multiply (and is a perennial): the He Shi Ko ...
3
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1answer
543 views

Can someone please tell me what kind of flower this is?

Can someone please tell me what kind of flower this is?
3
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2answers
63 views

Why do people say perennial food crops only produce for a few years?

When reading about plants I've heard that plants only produce for a few years, then die. Why can't they produce for as long as they're healthy?
3
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1answer
202 views

Is there a good way to seed perennial vegetables between landscape bricks?

I want to convert this: To look like this: Here's a few thing I need to know: How far should I space the bricks? How far should I space the rows? How do I hold the soil back? What would be ...
3
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1answer
787 views

How should I plant and grow Crosnes?

I've heard that Crosnes is a good crop to grow, and was wondering how to plant/grow it.
4
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1answer
138 views

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 ...
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3answers
2k views

What is this tall perennial with fragrant white flowers?

My grandmother brought me a bunch of shade-loving plants from her garden to help me fill in a few gaps in my own. She had most of them identified but this one had her stumped. Here's what I know from ...
4
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1answer
234 views

What are these flowering perennials with white flowers?

What are these flowering perennials with white flowers (growing in a yard in Northeast Ohio)?
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1answer
92 views

How to plant herbaceous perennials under an existing tree without harming it

I've seen beautiful plantations of herbaceous perennials plants under mature deciduous trees and I would like to plant something similar. My concern is for the tree itself (an Autumn Blaze maple in ...
16
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2answers
406 views

Do perennials need to be split?

This Old House recently published an article about splitting overgrown perennials. They suggest doing so every three to six years--however, I have a large bed of daylilies, and it's hard for me to ...
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3answers
169 views

Hearty Flowering Perennial for curbside appeal

I'm lost in a sea of articles with none of them actually answering my question so I turn here. Currently I plant mums every year in my front yard (Midwest region: Kansas, Lots of sunlight on the area)...
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2answers
94 views

Caring for & maintaining thyme

We have some thyme in our perennial bed and after seeing that it is quite frost hardy I'm realizing I don't know much about this plant. Specifically, I'm interested in how best to keep harvesting ...
4
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1answer
58 views

How do I subdivide mature chrysanthemums?

This spring, I bought little chrysanthemums (mums) of different shapes and colors at a neighborhood market. They have developed very well and now (in autumn) blossom in beautiful colors, e.g. yellow-...
3
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1answer
99 views

How to prepare herbs for winter?

I've got tomato, basil, rosemary, thyme and peppermint plants. I've read that the rosemary and peppermint are perennials. How do I prepare my [plants that should live until next year]? We had our ...
6
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1answer
99 views

What should I do with perennials in pots over the winter?

I had a small stone planter box built in to my front entrance. In this planter I had a handful of perennials. I needed to have my driveway torn up and repaved this year, and I thought it would be ...
4
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1answer
2k views

Dividing Montauk Daisies

Also known more properly as Nippon Daisies, I have a planting of this stuff. I hadn't noticed it flowering last year and had planned on ripping it out this fall not knowing what it was other than ...