[
continued from general Qs in post above]
OK, so this is what I found per plant and what questions I'm still stuck with. So many doubtful cases!
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Salix integra 'Hakuro-nishiki', the Japanse willow thing. Trouble here. Every webpage I can find, it says that the tree is "winterhard" - comfortably so in fact. Just leave it out. OK, so
why then did mine die last year? Winter was over, all I was left with was a very dead tree. I was assuming it had frozen to death - hey, it had snowed, and everything. And its such a pretty tree! I want it to live this year. What can I do to avoid another ignominous end? Was it that the pot had frozen, perhaps? Or perhaps because I was late with pruning it (I did it only in late April instead of in March, but then, it
really looked quite dead by then anyway ...)
Anyone any expertise?
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Lobelia, or to be precise (because all these sites go on about blue one-yearer lobelias, and those are not mine):
lobelia fulgens, "Queen Victoria". I got three of 'em left, one died already. Bought them because they had small flowers of this lovely, luscious darkred colour, but they soon finished flowering - guess I bought 'em too late, when their season had already almost passed. These apparently are sensitive. One site says it will bear up to -5/10° C, but another says it wont stand anything below 0° C. OK help, that's about now, what do I do? Just take 'em into the basement? Do I need to take anything off, prune them or anything, first?
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Felicias. The pretty little blue ones. (
Felicia amelloides is the full name I believe. In Dutch also called either
blauwe madeliefjes or
blauwe margrieten). I was told they're
one-yearers, as we call them - what do you call that in English? So, I guess, just throw them away?
But one website says that they can survive a mild winter sometimes. And another says to "protect them against frost". Well, if they
can survive, I want them to - they're cute. So take them inside - or to the basement? Or leave them out with bubble foil and hope for the best? (They're in little pots, though ...)
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Helichrysum microphylla. This one is one of my favourites. Silverblue-green little leaves on long branches that eagerly stretch themselves out over and up the floor and the wall. "Soil coverers", we call such plants in Dutch, so I was betting it would be sturdy. But as far as I could find anything on the net (and I found surprisingly little, considering how often I see this plant outside - or saw it outside last summer, anyway - I'm now trying to remember whether I saw it in gardens or only in pots in front of people's houses and stuff), it actually
isn't "winterhard". "Frost sensitive", they call it, though one website said that "in theory, it can't stand frost well, but in practice it often does OK".
What to do, what to do? It won't freeze -10° C or anything here in Holland, not likely anyway, but -5 it'll be often enough ...
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Dusty miller (or as its officially called, apparently,
senecio cineraria. In Dutch:
zilverblad.) Its pretty big now, from my fingertips up to my elbow. Like it a lot. Cant seem to find much online about how it does winters, but it doesnt look good. For one, it's called an "annual". Is that the English word for one-yearers? As in, forget it, it wont come back in spring? In fact, some websites specify that "it should be grown as a summer annual in colder climates", respectively that it "can be grown as a perennial in Zones 9-10, and as an annual in Zones 3-8". I had to
look up the zones, and I'm quite sure Holland aint zone 9 or 10. Its not exactly Florida here. So, forget about it? That would be a shame ...
On the other hand, though someone from Colorado wrote that it never made it through the winter there, someone from Cincinnatti wrote that theirs had come back three years in a row now. Cincinatti is already pretty North/central-European in weather, or isn't it? And it says that in zone 8a (still not quite Holland, but OK), the plant is "hardy" up to -12.2° C (10° F). That should be fine then. (I dont understand that list though. How come the plant is hardy up to 10° F in zone 8a but only to 30° F in zone 10a? See why this is very confusing?)
So, another dilemma. The info seems contradictory about whether it stands a chance of making it through winter. But nobody mentions taking it inside. Would that not be an obvious alternative?
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Dahlia. I have this beautiful dahlia that had obscenely sensual large pink flowers. Every time a flower finishes flowering, you have to cut off the stem that leads to it as far down as where the next sidebranch goes to another flower. That way I had already cut away most of it, apart from three branches (stems?) that still had buds on them. But they never opened, I guess its too cold now.
Anyway, this is what I found on what to do with it: As soon as the first nightfrost has been (not sure whether it has, but it should be right about now) I have to cut the stems down to 20cm from the ground. Did that. Then leave it to dry. (I put it inside here in the room now, slowly drying - soil was very wet because it's been raining all the time lately). Then I have to dig out the bulb/tube (dont know the english word), leave it to dry on a newspaper for a few days (letting it dry but not shrivel), clean off all the soil, then preserve it in peat dust (another site says: in a well-closed box with peat dust.) In a cool, dark place (that would be the basement.)
Wow. Sounds like a lot of work for a plant I bought for 6 or 7 euros. But it would be cool to succeed, I guess.
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Bidens (or in Dutch also
tandzaad). Hey, they're
still blooming! Cant break those, it seems, they just keep on and on. Not the felicias, and topping off those just led to ugly empty stems sticking out. But with the Bidens topping off always augured in a new wave of little flowers, and even now there's a bunch. Just so you know, cant mess up those, recommended.
But, I understand, one-yearers. Wont survive the winter, wont come back next year. Pity. Then again, one site specifies that they're good up to -5° C. So what, if it doesnt freeze more than that this year it
will continue into next year? My father said to bring 'em inside, I dunno ...
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Euphorbia esula (or in Dutch,
heksenmelk, witches' milk). Well, I thought it was heksenmelk, that's what I wrote here earlier. But my dad gave me a book about plants (interesting and pretty, but not very useful), and the heksenmelk pictured in there doesn't look much like what I have. Instead, what I have looks like the Euphorbia peplus pictured in there -
tuinwolfsmelk, in Dutch.
Actually ... using Google's image search I just found out that what I have is more likely
Euphorbia Helioscopia (or
kroontjeskruid,
pretty pictures here.)
Either way, it should be fine, apparently. Grows in the wild outside too.
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Vrouwenmantel (
alchemilla mollis in Latin, I think). Same. Seen it grow outside on city streets too, I guess that means they should be fine. One site says to leave the falling leaves, so they'll protect the soil a bit from the cold. OK, can do.
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Astilbe, quite similar to a Spirea. Last winter I thought it had died (what did I know), this spring it came up again. Presume it will next spring too. But this time I wont forget to take the dead stems out, because I think thats what I did wrong this year - I just left it the way it came out of winter, and it never grew new flowery things, just green leaves.
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Pot with dead Japanese willow and cute weeds. Ehm, I guess I can just leave that one outside ;-).