What plants do you grow that flower late summer and early fall? I'm getting bloom from a couple of low-growing Oenotheras, the pale yellow one and the white one that turns pink (O. missouriensis and O. pallida?), Gentiana septemfida, Salvia forskaohlei (light purple & cream), Linum flavum compactum, Campanula carpatica, Pterocephalus pinardii, Silene schafta, Satureja arkansana, a creeping pink Verbena, and Thymus 'Doone Valley'. Oh, and Penstemon hirsutus 'Pygmaeus' is just starting to re-bloom.
The plants are growing in 4" to 6" of road gravel, over sandy loam with pockets of sand and rocks (it's glacial moraine), in full sun, and they never get watered once established.
June, I did grow them all from seed. They came as Allium flavum var. tauricum from NARGS seed exchange some years ago. Apparently, the originator submitted the seeds as specific colours but the seed 'distributor' put all the seeds in the same bottle, ending up with a mixed bag of colours. I was expecting yellow flowers but as they started to bloom, I ended up with a mixed patch of yellow, white, pink and orange shades. Last year I dug the clump while it was in full bloom and seperated each colour so that now each colour is in its own clump. I plan on collecting seeds based on colours this fall. If you think on it, drop me an email later the fall and I can send you some seeds.
Thanks, Todd. I'd love some seeds. I don't have any experience of growing bulbs from seed (apart from some Pancratium maritimum seeds that were collected at Leptis Magna in Libya last fall, and I sowed them in almost pure sand). What advice can you give me for germinating and growing Allium flavum, please?
They need stratification. Sow them Jan. 1 then put the pot in the fridge for 2 months then expose them to gentle heat. Or sow them the fall in pots left outside for the winter..they'll germinate in the spring. They actually self-seed in my garden. They should flower the second year from seed. Some flavums have lovely blue foliage, although it seems to be restricted to the yellows.
It's nice to see any activity here. It is a slow time of year in the rock garden as far as blooms go though. I rely on the foliage for interest this time of year. I grow more fond of the Acantholomons each year. I do have a few things that are still blooming but nothing like the spring show of blooms. I'm glad to see that Gentian septemfida and Pterocephalus pinardii bloom this time of year. I have seedlings of both that will be going into the garden shortly.
As far as what's actually producing blooms right now I have Oenothera caespitosa, Sphaeralcea caespitosa, Aster coloradoensis, Talinum brevifolium, Othona capensis, Townsendia incana, Erigeron compositus, Andryala agardhii and Erodium carvifolium that has been blooming all year. Petrophytum caespitosum is also sending up it's white/cream bottlebrush blooms right now that the bees seem to enjoy and Eriogonum ovalifolium is still producing little puff ball blooms. Alyssum stribryni(sp?) is looking much better since it's hair cut and producing a bit of yellow bloom (I may keep it another year). I also have a couple of Penstemon that are blooming but I don't know which they are. One is larger and I'm thinking it may be P. laetus the other is smaller with rosettes of bluish foliage and small lavender blooms. A single Castilleja integra is blooming right now situated next to a Salvia dorii. These are planted in a sandy/gritty clay loam mulched with pea gravel and are watered occasionally through the hot dry part of the growing season.
I'll have to check out a couple of the other plants you all have listed.
Ally_UT I don't have nearly that much variety blooming in the rockery now. I have about 5 forms of Allium flavum, A. pulchellum, A. lusitanicum, A. senescens, A. cyaneum, A. angulosum, A. tuberosum, Oxalis 'Ione Hecker', O. 'Ute', O. squamata, Platycodon grandiflorum, Campanula patula, Veronica whitleyi and Geranium sanguineum. Cyclamen hederifolium is just starting to bud...the first of my fall-blooming bulbs.
I'm taking notes too Gram. I've added several of the above mentioned plants to my short list.
Todd, I know the rest of your garden is filled with an abundance of bloom that I could only dream of. I look forward to pics of the Cyclamen. I don't have many Alllium but my A. senescens 'Blue twister' is just finishing up and the A. tuberosum are just beginning. I've got another Allium that is blooming but I have no idea what it is.
What about autumn Crocus? or Colchicum? I planted some Crocus boryi that I would have enjoyed seeing but I'm afraid they've succumb to the elements and my ignorance.
When do these start to bloom? I could use some suggestions on ones that might be suitable for a xeric rock garden.
Staying with the theme of the thread I'll add a couple more plants that are blooming. These aren't in my main rock garden but would be suitable for the larger rockery. There is Zinnia grandiflora and Calylophus serrulatus as well as Papaver croceum all of which are producing delightful yellow blooms. Epilopium fleischeri is putting on a nice display of pink gaura like blooms and Dracocephalum ruyschianum is still blooming sproadically as is Antihrinum hispanicum 'roseum' .
The Oenothera minima is blooming now in one of my rock beds. It is a sweet little plant that only grows to about 6" tall and the little yellow flowers are about the size of a pencil eraser. It is well-suited for rock gardens.
Great pics Weezingreens. I've never heard of that Oenothera before. Very cute. Love the Edelweiss too. I thought that I had lost mine this year when it started to look all dry and crispy but it's starting to put on fresh growth now that it's gotten a bit cooler here.
Most Alliums sprout like grass for me but I do have trouble with a few species. A. zebdanense...tried it 5 times and still no luck!...chives self-seed all over the place!
This is an Allium blooming now that came from a gentleman in Latvia. He did not know the species. It is something like A. senescens but paler with a larger head and broader leaves. I can't seem to find anything on the internet that matches.
That's a beauty, Todd! I think I should put out a real effort to get the allium going in my gardens. Ceeads is a master at growing them, and she lives about a mile from me. I'll have to sneak down to her house with a flashlight and a trowel some night! She gave me a lovely little lewisia I mistook for an allium. I believe it is Lewisia pymaea. It seems happy in my wet, cool climate and puts out lots of little babies every summer: http://davesgarden.com/pf/go/55583/index.html
My L. pygmaea bloomed in the spring, but it retains its foliage all summer long. I've never tried collecting seeds. The flowers grow so close into the foliage! So far, it self seeds so readily, I haven't needed to harvest seeds. Your A. pulchellum is lovely.
Rick that Petrohagia reminds me of a sandwort that I grow in my dryland garden, I like it, the Petrohagia that is. So is that an Epilobium in the upper left hand corner?
Todd another great looking plant that I've never heard of. After looking up the Trachelium I see that it's suitable for xeric and alkaline conditions, which got me excited. Then I notice it's not particularly cold hardy. Do you have to bring this inside for the winter?
Love the cross effect on that Epilobium, Tammy. I hadn't realized that species was so nice.
The other plant in the Petrohagia pic is a little Penstemon pinifolius. Interesting in that I planted both P. pinifolius and P. pinifolius 'Mersea' at the same time, and which do you think bloomed? The wimpier, yellow flowered Mersea.
Todd and Weezingreens (Gesundheit!): always great plants. I have two G. septemifida in two gardens that bloom in succession. But neither make it to September(!)
Great thread I just stumbled on - so many plants I've never even heard of! I'm making notes! Todd, love your blue A. cyaneum and the Trachelium! Didn't know A. flavum came in so many colors.
In my small "rock border" my dianthus are still blooming although they're getting a bit tattered.
Also blooming at the moment are:
Dianthus 'Queen of Henri'
Yeah I was worried about that! We do get a lot of depressions coming up from New Foundland! We're due to get some heavy rain and winds on Thursday and Friday I saw on the weatherforecast tonight - could that be Florence? Hope you won't get too much damage Todd! We've been getting depressions on a conveyor belt for the past days - it's been rain and wind since Friday.
Rannveig, the hurricane is suppose to hit here Wednesday so it would be in your area for Thursday-Friday for sure. We have had some unsettled weather here but no major rain since Aug. 31. It was sunny today but north winds so only 14 C. Suppose to be sunny and calm tomorrow and near 20 C..the calm before the storm!
Yeah I think he was, leftwood :-)
By the time these hurricanes get up to Iceland they're no longer hurricanes - just deep depressions with lots of wind and rain - we get A LOT of those - nothing to get upset about really - just an annoyance... We're due to get one tomorrow ... lots of wind and rain coming up - Yibbeee (or not!) !!!!
sorry to hear that Todd. We were to have a "nice" deep depression here today with wind and rain but it looks like it's passed by or isn't here yet - it's windy but not raining at them moment. The forecast for tomorrow and friday has changed a bit - not sure Florence will be dropping by - we'll have to wait and see. We could see a part of her down there over Newfoundland on the weathermap yesterday - it looked pretty nasty! Hope there won't be too much damage!
I did get a tour of Zuzu's amazing property, chock full of all sorts of goodies! and kitties!
I think they must have been summer colchicum for sure. Did it really get in the 40's there?
After the 110+ days were over??? We have much more well-behaved weather here :-)
There's absolutely no sign of my colchicum here. And I hope we get some of the left overs
of the left overs from one of those tropical storms. Its a little dry here. But please, not a
repeat of my namesake from last year (Tropical Storm Tammy - dropped 13" in an afternoon.
I couldn't get a friend home after we went to the Rock Garden Society meeting. Every river
and creek was over its edge & the roads were all flooded.)
Tammy's cute as a bug and was a joy to meet in person finally, but my garden was less than awesome when she was here, Rannveig, because the heat wave and the gophers had temporarily obliterated some of its charms.
Zuzu, too bad the heat wave couldn't have obliterated the gophers LOL. I had no idea your temperatures were so extreme so early.
I should get some colchicum. they would probably be fall bloomers here. Todd, the c. agrippinum you posted is so pretty. I've ordered some species tulips and mini daffodils for the rockery to put in this fall, so I'll at least have some color next spring.
That pic killed my computer! I'm such a dummy, I never checked the file size - it was HUGE, and I only have a dial up line. Anyhow here's a much smaller (in bytes) pict of a bit more of the gravel bed. Zinnia grandiflora is in the center, and behind are orange Eschscholtzia and purple Salvia transsylvanica.
Great photos June! I love that cute litlle columbine and the rest of the gravelbed looks really good! I'm eyeing those bare spots with a bit of envy I wish I had some of those! LOL I was planting 4 new plants in my very narrow raised "rock garden" bed on Sat and had to start taking things out to make room for the new ones ... ;-)
Nice alpine garden June. Have you managed to get Zinnia grandiflora to overwinter? Mine rotted last winter. The blue columbine looks like A. caerulea. I have scopulorum and the spurs are not nearly that long. Your's is a beauty with very attractive foliage.
Thanks for all the kind comments. The gravel bed is about 2 years old, and I'm still in the process of filling it. It's a part of the garden that people look at and wonder if it is meant to look that way. Now that the plants are beginning to spread out, it looks less like a Martian landscape.
Todd: Zinnia grandiflora has gone through one winter, but in the spring it took so long to appear that I thought it had died. That's why a Helianthemum is planted so close to it.
June, what is the yellow flower in the right corner and the reddish-leaved plant near the middle?
Alliums are still coming on, even this late. This is one of my many Allium senescens selections. All look much the same but bloom at different times. My earliest blooms in mid-July and this one will bloom from now until October. Essentially, I have at least one A. senescens open throughout a 3 month period.
Well, I was trying to post! I see Dave is still having this glitch.
Todd, thats good to know about the alliums. stretch out the bloom season. I'm mostly gathering info at this point and hope to really get some plants in next year. I've ordered a few things from Arrowhead Alpines because I was ordering some dwarf conifers and couldn't resist getting a few plants while I was there. no alliums yet, though.
Todd, to the right of the Zinnia is a lovely prostrate, grey-leaved Lostus labelus with tiny yellow daisy-type flowers. When it dies, I'll dig it up and find the label underneath, probably. Also to the right, is yellow-leaved Berberis thunbergii 'Moulers', a (so far) very dwarf cultivar. The maroon-brown stuff that you see behind is dead flowerheads of Sedum floriferum 'Weihenstephaner Gold'. I really love the way its leaves turn deep red in winter, and it's a mass of yellow flowers in early summer.
Gram, you are so lucky to be able to order from Arrowhead Alpines. Such a great (and quirky) catalog! I had some good stuff from there when I was living in PA.
Most of the plants in the gravel bed have come from either Wrightman Alpines (they ship) or The Country Squires Garden (pick-up only). And there's some from Ontario Rock Garden Society members plant sales or seed.
this is my first time ordering from Arrowhead. definitely quirky. made me a little nervous that they don't have online ordering and won't commit to any shipping date. I called last night and Bob said my order either shipped yesterday or would go out today, so I feel better. I faxed it, so then I start to worry if they even got it. I like those e-mail confimations ;0) but they had dwarf conifers I wanted that were hard to find and they have such a good rep that I decided to go ahead. spent too much $ so they better be good!
I met the Wrightman's last fall when they did a talk at our local chapter of NARGS. They
did a workshop on tufa planting. It was so fun. I stocked up on a number of their goodies too.
Based on what they brought with them, I believe they have a beautiful selection!
I've never tried Arrowhead Alpines. I'll have to give them a try. I ordered from Beaver Creek
Greenhouse this spring and was delighted with the plants too. (Mail order - beautifully packaged).
I've ordered from Beaver Creek and also highly recommend them. Wrightmans and Alpines Mount Echo are also quite good.
Lostus is not a genus I've heard of...was it Lotus? but then, that's a waterlily isn't it? Hmm.
A dwarf Berberis sounds nice. I have four but none are dwarf to say the least! That Sedum is a new species to me...I'll have to do some research as I have quite a few Sedums but could always use more!
Most of my alliums have been grown from seed. I did not get the seeds as specific cultivars of senescens. It just turned out that different sources flowered at different seasons. Some came as other species but when they bloomed, ended up being more senescens. That species is among the most commonly mis-identified allium!
Lotus is a genus in the fabaceae family - I tried sowing Lotus corniculatus once but when it flowered this summer it turned out to be something else with lavender/white bean flowers instead of the yellow I was expecting - so I'll have to try again! It's really pretty - not too many yellow alpines that grow here ... never heard of Lotus labelus or Lostus genus ...
I was thinking water lotus...the genus Nelumbo, not Lotus. Yes, I now realize that Lotus is a Fabaceae...Lotus corniculatus is a hydroseeded roadside establishment plant locally...its all over the place. Rannveig, you are probably fortunate that yours turned out to be something else as Lotus corniculatus can be invasive.
Here's one that's flowering at the moment, Primula capitata 'Noverna Deep Blue' - this one flower head has been in bloom, since the beginning of August - there are still a few buds up on the top that haven't opened yet. I noticed today a new flowerstalk, but that one probably won't start to flower before the first frost. I really like this primula, it's one of my favorites - maybe because it's borderline here - the ones I planted out in my perennial bed last year didn't make it. I had a spare in my cold frame and decided to plant it in my alpine border since it has better drainage. I sure hope it'll survive the winter!
Ah, ok - I probably got a few of those too! Have a nice trip!
Tammy, I sure hope mine won't turn out to be a Deadus primulus as well, I got two of those last year!
Wheezin I've tried starting semps form seed - only one species though. I haven't been able to find seed of the ones I'd like to grow. The seed germinated easily and I got far too many plants - it flowered this summer. Here's a photo - it's Sedum aizoon I think (to lazy to look it up ;-))
Rannveig, my Primula capitata is just starting to go by. I guess mine bloomed about 3 weeks before yours. I've triedit many times and last winter was the first that I was successful in getting it to overwinter. I inverted a large pot over the plant to keep off the excess rain and snow and that seemed to work. Otherwise, they rot over the winter.
Weezing, I have grown Semps and Jovibarba from seed...dust is right! Some did well, other were no shows. They can grow surprisingly fast from seed.
Thanks for the tip Todd! I've used that method on many borderline plants with fair success - I got a bit lazy last winter with the pots. I thought I'd covered the P. capitata plants but it turned out to be P. cockburniana that got covered up! Probably needed it too - it lived the others didn't. I've collected the christmas trees around the neighborhood and used the branches to cover up my alpine bed - it's worked pretty well - not many losses so far :-)
My semps are pretty new and none have flowered so no seed to collect yet.
good idea on the pots for winter protection. the christmas trees, too, Rannveig. they suggest using evergreen branches to cover heather over the winter if you don't get enough snow cover. unfortunately, I didn't have enough of either last year and my new heaths & heathers suffered for it. didn't occur to me to collect old xmas trees.
My neighbors probably think I'm crazy - but they're (x-mas trees) thrown out on the sidewalks to be collected in January after Christmas so I thought why not use them? We usually don't need to shelter the plants until after christmas anyway. Some x-mas trees are too dried out to be very useful though and drop all their needles. My older daughter was very helpful last year - I think she came home from school with three trees that she and her friends dragged home! Burlap can also make a useful shelter - I use that for my rhododendrons. Had to look up heathers wasn't sure what they were :-) I've managed to overwinter a few Calluna plants - tucked inside the burlap with the rhododendrons.
The ericas and callunas are sold here in autum for autumn color in tubs and baskets - there's no chance of overwintering the ericas here. Your's is real pretty :-) It would be nice if we could just get a nice blanket of snow around late november to keep our tiny gems warm and cozy until march!
the ones I have are all winter hardy to z4 or 5. what I think did some of them in is the drying out from the winds. most of the ericas I have are winter bloomers (e. carnea). here's c.d.eason from it's first spring. the color is great.
the autumn color on some of the callunas is amazing. these are still young plants, but this one looks like it's on fire...c. vulgaris 'Wickwar Flame'. the blooms are nice, but a somewhat insignificant pale lavender. the foliage on this one is pretty bright all year round.
Great heather collection! We grow many heaths and heather in the Botanical garden...in fact I struck cuttings of about 25 different cultivars today for sale next fall. Rannveig, I'm surprised that Erica would not grow in Iceland...they do better here than the Callunas.
Erica cineria is a bit finicky here too and can get damaged some winters. We also try E. X stuartii and E. X watsonii...they also are touch and go. But E. carnea and E. X darleyensis are easy.
Gram those are beautiful! So many different kinds and colors !
I don't know the name of the Erica they sell in the garden centers every fall - it's bright pink. There is no way to overwinter it here ... hence you have to buy new ones every fall. They only have that one kind for sale and the Callunas in different colors. I've also seen some types of Hebe for sale, but they too are tender. I often feel that they should try to import plants that have a chance of doing well here - but then they'd probably sell fewer plants ;-) Calluna vulgaris grows wild here - it's really pretty and gets very nice fall colors - don't have it growing in my garden. Can they be raised from seed?
I've been busy lately getting all my plants trimmed and ready to winter over in pots. After the first hard freeze I'll be mulching them, then covering them with plastic. Yesterday, I trimmed all my sedums, and it occurred to me that I should be sending all those cuttings out to people that have a longer season than I do. There is hardly time to root anything here.
Yes, I started aizoon from seed last spring and it did quite well. Sedum acre is quite easy, as well. There are several others I've started from seed, and some that I just keep rooting from original plants. I also started Sedum pulchellum from seed this spring. It is quite an interesting form. This picture was taken in July, and now it is getting ready to bloom.
Finally ... I've got a cyclamen that came back & bloomed!!!! This is a real triumph for me... I've been
starting seed & nurturing them 'til I put them into their final resting place. Lots of Deadus Plantus! But
I got one to come back this year.
Oh, Tammy your cyclamen are so pretty! I tried raising Cyclamen hederifolium from seed a few years back, but they all rotted during the first winter so they never amounted to anything. I'd really like to try again - they're sooo pretty! No wonder you're proud!!! Congrats!!
Love the waterlily Colcicum - I planted some last year or the year before - they haven't flowered properly for me yet. My "regular" Colcicums are starting to peek up - no sign of the "waterlilies" yet.
Rannveig - I think I have sacrificed more than 20 seedlings before I got this one to survive
and bloom! I always get seed from the NARGS exchange (been trying for about 3-4 yrs now)
I planted this one 2 years ago - it was a fairly mature bulb. I have had a few leaves the second
year but this is the first time I got bloom!
Rannveig, do you want some Cyclamen hederifolium seeds? I have some I collected off mine a month or so ago. They were collected off a white one but there are pink ones nearby so you could get either colour.
Todd, that one is pretty. The autumn crocuses don't do well here, they are too late. I planted some a few years back and they've managed to put out blooms but then they usually freeze without ever opening.
Mine are Crocus pulchellus. Haven't seen any sign of them yet. I always think I've lost them and then they pop up much to late to do anything other than freeze ... I guess I'll have to wait and see whether they'll show up this year.
My Colchicum 'Water Lily' just opened it's first bloom! Technically it's not in my rock garden bed, but I decided to post it here anyway :-) It's the first time it's flowered properly, the Colchicum seem to need about 2 years to settle in here before they start flowering. My autumn flowering crocuses (Crocus pulchellum) are starting to peek up so they're not dead, but they probably won't flower since it's starting to get cold here.
Of my Colchicum, Waterlily was the last to flower. Remind me next summer to send some Colchicum agrippinum Rannveig...its the first to bloom for me in mid Sept. so should do well for you. It's a mini and perfectly suited to the rock garden.
My Crocus speciosus are just breaking the ground. It's the last of my hardy fall crocus to bloom for me.
Thanks gram! I plant them in autumn. Just bought a white Colchicum. The flowers had already shriveled so it won't flower until next year or the year after ... seems an awfully long time to wait ! Patience is not one of my virtues :-)