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Love/Hate Relationships

AndrewR

By AndrewR

18 comments


Having spent several hours extracting schizostylis from a corner of the garden, I thought about other plants that I like but which have designs on world domination. Schizostylis really only becomes invasive in the right conditions – sun and damp soil encouraging new bulbils and spreading roots. In conditions that are too dry for its liking, all I get is spindly leaves year after year. Another South African, phygelius, is much more at home in full sun, quite heavy shade, moist or well-drained conditions – none of these seem to slow its suckering habit.

Oenothera ‘Twilight’, planted earlier this year, had spread into a clump six feet across. Its rate of growth was comparable to euphorbia amygdaloides var robbiae I allowed into a border many years ago; three years later it had colonised a third of the length, infiltrating everything else growing in it. Now it is corseted in a bottomless pot, planted on heavy clay but still makes the occasional dash for freedom if my back is turned.

Some plants are useful in growing where nothing else will, but as soon as they reach more hospitable conditions, they spring off in all directions. Fox and cubs, previously known as hieracium auranticum but now sold as pilosella aurantiaca, grows right against a wisteria trunk but is now spreading into the adjoining grass. Creeping jenny (lysimachia nummularia) originally spread under the fence from next door; it is now restricted to a pot on a pedestal, making an unusual trailer down the sides. Persicaria also covers a wide area regardless of soil conditions and ajuga is a ready coloniser of damp shade. Vinca major is really too vigorous for small gardens and even vinca difformis, although not so hardy, needs watching. Gladiolus papilio, planted behind bearded iris, is running and I was able to fill ten pots to sell earlier this summer. Fragaria, the ornamental strawberry, is more above board (and soil), flinging runners out which root all too readily.

Then there are the seeders. Sisyrinchium striatum is renowned for spreading itself around, often first arriving by seed from a nearby garden. Many of the small alpines in the same family will soon overwhelm a rockery or scree bed if allowed to proliferate unchecked. For damp soil, meconopsis cambrica, a native small yellow relation of the blue Himalayan poppy, makes itself too much at home. I am also finding cowslips need deadheading if I am not to finish knee deep in them. And lagurus ovatus, the annual hare’s tail grass, is also very prolific in its offspring.

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Comments

 

It's one thing restricting the growth on our own over-active plants. Can put them in pots. But it's very difficult when the invasive plants are encroaching from a neighbour's gardens.

When I first bought my house, over half of my front garden lawn was overgrown with a plant from next door which throws out shoots under the ground. I think it is Hypericum calycinum. Had to dig up most of the front garden to try to eliminate it.
Now it's started invading from next door again.

Almost impossible for me to grow pretty neat plants, when a neighbour puts in thugs which are never trimmed back, such a fast-growing ivy and huge ceanothus. Makes me want to give up trying. My delicate clematis and trachelospermum jasminoides soon get smothered. Just can't compete. Help!

30 Sep, 2008

 

It's fascinating how we form these 'relationships' with plants, and we often develop a love / hate relationship with them.Often we impose views that are merely based on our emotional or aesthetic responses to them as well. An interesting Blog Andrew.

30 Sep, 2008

 

Generally love most plants esp shrubs as these often the backbone to a garden.The only plant well tree actually could happily see gone is the larch tree.

A deciduous conifer (!) planted extensively here to make those next to useless fence panels.The needles form such a thick mat that nothing grows below them - they ooze sap which attracts larch flies.Scary things like giant wasps but fortunately dont sting.Mind you you need some convincing when you see the size of them!

30 Sep, 2008

 

Ah, how can you have too many of the Welsh Poppies ? They are sooo delicate. And the massive common or garden Evening Primrose seeds prolifically in my garden, but are too beautiful to get rid of, unless shading something more choice. Also, campanula poscharskyana ...

I really don't mind if things get a bit out of hand once in a while as it reminds me that we cannot be entirely in control at all times - therefore we should relax and enjoy the ride until we've had enough!

Bonkers, I planted a Larch about 16 years ago and it is wonderful. I don't find the needles hanging around at all - I have lawn under mine and when I mow, the needles whizz up into the machine and are magically disposed of. Plus, I think that the worms pull them down into the grass...Never seen a larch fly (or an elephant, for that matter...)

30 Sep, 2008

 

You must have some amazing worms Claire ! Hope you never get bitten by one as they must have teeth to munch on those needles.Perhaps seeing hundreds of thousands planted across North York moors makes me somewhat anti - glad you happy with yours.

30 Sep, 2008

 

When I moved here I brought lots of plants from my old garden but there were some I wanted to leave behind.
Fox & cubs was one of them. It just became a nuisance.
Also Lady's mantle, Lysimachia, a 'black' Iris and day lilies. The last two I found growing much too big with not many flowers. Ferns also tried to take over the garden.
Unfortunately Foxes and cubs and lady's mantle came here as stowaways in pots with other plants.
Will I ever be free of them ? I wouldn't mind if they behaved themselves and didn't spread too much. but I'm afraid that will not happen. I'll still be digging them out all my life. I think of them as weeds.

30 Sep, 2008

 

When I was living in Britain I once had a lysimachia amongst the flowers in a hanging basket over an area of gravel with three "stepping stones" by my small pond. The following year I was amazed to see the gravel area turn yellow with the lysimachia flowers which had, obviously, self-seeded, leaving the stepping stones standing out amongst them. I happily left it to do its own thing and in the following years constantly gazed at it in amazement at the way plants tell us what they like best!

1 Oct, 2008

 

I just realised, whilst weeding out the flippin' things, that there is one plant that I really don't appreciate spreading itself around - the Lemon Balm (Melissa sp) which looks horrible most of the time (foliage a bit nettle like) with indifferent flowers (small,white) and looks even worse when the seed heads appear. The only good bit about it is the scented leaves and its medicinal properties.

1 Oct, 2008

 

I have a variegated one . It doesn't grow as rampantly as the green one and looks better too. I like the smell it's got.

1 Oct, 2008

 

I'd like to compliment Nariz...you have hit the nail on the head... for all our plans and catering to less than enthusiastically growing plants...the plants themselves tell us most succinctly where they will be...I have had experience of the Lysimachia...it came to me from a neighbour's yard...but I like it so I leave it alone...I'm onside with Clairefifi about Melissa also...if only it didn't smell so wonderful and make such a great tea...And sorry BB, but I have a Japanese Larch tree in my backyard that was my first garden acquisition and I love it...like Clairfifi...I've never had a minutes displeasure with it.
Great blog, Andrewr. Very thought provoking.

1 Oct, 2008

 

I've enjoyed reading everyone's opinions.
Yes, this is a good blog,
exploring our attitudes to various plant guests and plant intruders! :o)

2 Oct, 2008

 

I had the variegated one and every single seedling from it was green :-(

2 Oct, 2008

 

Quite an achievement Andrewr.
After all, as Kermit says:
It's Not That Easy Being Green. :o)

2 Oct, 2008

 

Good blog! Oh the joyful thought of actually being knee-deep in cowslips. You do mean the real ones, don't you? How could I ever have too many?!

2 Oct, 2008

 

I could hardly believe the coincidence., I spent yesterday pulling out Sysyrinchium striatum and Everning Primroses. Too late as both have seeded, and what a quantity of seeds thry produce.
I love Welsh Poppies so they prosper on the Rock Garden.. The one you don't mention is CROWN VETCH (Coronilla varia) That is a hate/love one as are Euphorbia cyparissus and unexpectedly BURNET ROSE (Rosa pimpinellifolia), which I brought home from Strumble Head in West Wales, and find it widespread under the Rock Gardeen stones.
This is a fine Blog you have created.

5 Oct, 2008

 

I also have lemon balm and it pops up everywhere!! keep digging it out i love the smell but think it ought to go in a pot, suppose it will still seed itself unless i am quick enough to pull off the seed heads though!

5 Oct, 2008

 

I usually end up leaving it too late to pull plants out that I don't want to spread. When I do get round to it the seeds scatter everywhere and spread far and wide!

18 Oct, 2008

 

hmmm....just musing...Melissa is such a tenacious rooter that perhaps with judicious pruning/cutting perhaps it would make a lovely lawn...imagine the smell when mowing??

18 Oct, 2008

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