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Agastache

richardwatsonjoinerrichardwatsonjoiner Posts: 30
in Plants
Hi guys im after a fully hardy, reliably perennial agastache. Ive grown agastache mexicana from seed but from what ive read they arnt very reliable. Any suggestions or even tips to keep agadtache mexicana alive and kivking into next year would be great ☺
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  • AnniDAnniD Posts: 12,585
    I don't know if there is such a thing as a completely hardy agastache to be honest.
    I have some agastache mexicana "Sangria" that l grew from seed, this is their second year . I also have "Blackadder" and "Blue Fortune" that survived. They are all on well drained soil, but l think it very much depends on the winter weather that we get as to whether they survive or not.
  • HouseFinchHouseFinch Posts: 328
    Is your soil well drained and full sun? Maybe more grit, or sand in your soil mix to help it keep it's feet dry? Just picked up a Agastache Aurantiaca 'Tango' yesterday. It was tucked in with the 'hardy perennials' and is good for zone 5-9. The label said it is a water-wise/smart plant-which in our area means it can stand the dry summer conditions without too much stress. Might that be the trouble?
  • richardwatsonjoinerrichardwatsonjoiner Posts: 30
    I thought as much! Im fairly lucky as i live in swansea, south wales so winter wise its not all that bad. I saw "blackadder" in my local garden centre but im reluctant to pay for 6-9 of them at £6.99 a each if they snuff it at the sight of a frost 😂 
  • richardwatsonjoinerrichardwatsonjoiner Posts: 30
    Im on a heavy clay soil but ive beefed it up with well rotted manure, compost, grit and some sharp sand. So drainage isnt really a problem. The problem is that in U.K its hit and miss with winters. Normally fairly mild and damp (wales is famous gor the rain 😂) but sometimes quiet cold and frost/icy.
  • LynLyn Posts: 23,190
    I grew these from seeds a few years ago, huge plants always covered in bees, I’ve got blue and white, very hardy. Blue Giant Hyssop (Agastache foeniculum) 
    Gardening on the wild, windy west side of Dartmoor. 

  • HazybHazyb Posts: 336
    You could always take cuttings and overwinter them as a back up.  It’s common to do this with plants that may not survive our winters. 
  • NollieNollie Posts: 7,529
    edited July 2019
    Apart from working in a good amount of grit around the planting site (not just in the planting hole),  planting on a slight mound, so water drains away from the crown of the plant, also helps.

    Agastache Aurantica Tango is my favourite of the shrubby agastaches. It’s a bit shorter and perhaps less vigorous than the other one I have (tangerine something, which is more pink) but a good clear colour, like freshly squeezed orange juice.
    Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
  • LynLyn Posts: 23,190
    They’re all very easy to grow from seeds, the lavender one is very pretty, small but smells lovely. As is the orange Sprite, smallish I mean doesn’t smell. 
    Gardening on the wild, windy west side of Dartmoor. 

  • macanfleistearmacanfleistear Posts: 1
    Last week of June here on Vacouver Island I'm going to take some agastache cuttings
    My question is should I overwinter them in pots in the greenhouse or plant the
  • Pete.8Pete.8 Posts: 11,340
    If you're likely to get frost, then the greenhouse is a better option.
    They do overwinter here somewhat, but it's around june before I see any signs of new growth and the seeds I sowed in March are almost in flower. The ones that survived the winter in the ground soon catch up though.
    I take cuttings and save seed - both are easy

    Billericay - Essex

    Knowledge is knowing that a tomato is a fruit.
    Wisdom is not putting it in a fruit salad.
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