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Comment by WalterBright | Hacker News Reader

I've thrown out wildflower seeds many times on my lawn, but nothing took root. So I've been trying simply mowing it once a month to keep the blackberries and scotch broom from taking over, and seeing what happens.

(Blackberries and scotch broom run amok if left alone, and the former creates an impenetrable hedge taller than myself with a dead zone underneath, everything else choked out. It takes repeated mowings over several years to finally kill them.)

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If you’re removing Himalayan blackberries you have to dig the rhizome out. It’s not enough to cut it down. Basically you take an adze or similar and cut in where the shoots are coming out of the ground. Then pull up on the shoots and a little ball will come up with them.

Here in Washington State the Himalayan blackberries are an invasive species which grows all over the place. There are no natural predators here. If they become established then they kill everything around them including some trees. The only reliable way to remove them is by digging out the rhizome after cutting them to the ground. It can take several years to completely eliminate them from an area

If you keep mowing them, they eventually starve and die. They cannot live off of the root ball forever. So far it looks like it takes two years for that to happen. Every time they throw out shoots it consumes the root ball's food. Cutting off the shoots before they can photosynthesize more food will do the trick. It also helps to cut them down after they flower and before their resources get sucked back into the root ball in the fall.

For scotch broom, they'll also grow back if you cut them off at ground level. But I found if you cut them off right after they flower and start going to seed, they don't grow back. Apparently they throw so many resources into the flower they can't recover.

We also have a huge problem with english ivy, which looks nice but kills the trees.

I've got nothing to add but I just wanted to remark that your description sounds incredibly gruesome.

You need more prep to get a wildflower meadow going. The Royal Horticultural Society has a good guide here: https://www.rhs.org.uk/advice/profile?PID=436

Thank you, but that looks like a lot of work :-( and I have a brown thumb (everything I plant turns brown).

It seems reasonable to me that native plants should grow without intensive assistance (else they would go extinct). Why does this not happen?

My key reading from the article was over-fertility leads to mono-culture, so paradoxically you need to reduce soil fertility to encourage diversity.

Reducing soil fertility probably needs intervention to remove rotting vegetation etc.

I am guessing that at one point in time native plants would have had animals and insects that were eating them and maybe reducing soil fertility.

I think the reduced fertility was because the fields were being used to make hay, rather than being cut and the cuttings allowed to rot in place. The minerals in the hay were removed from the field, gradually depleting the soil.

^This (which is the same thing both the original article and the RHS article said). Grass will out compete wild flowers if the fertility of the soil is too high. Either:

- get rid of the grass

- mow it very short

and then plant wild flowers. Just throwing seeds onto the lawn will do nothing.

To get rid of grass either:

- dig it out (easy in the right soil; very hard in clay which is a lot of the UK)

- cover it with cardboard, cover the cardboard with soil, and plant on top.

I'm currently converting our front lawn to wild flowers. Luckily we don't have clay so I'm able to dig out the grass.

> I have a brown thumb

Definitely could help with that. Send me a mail with some close photos of the weeds in the area, and basic info about the continent and climate (https://en.wikipedia.org/wiki/Hardiness_zone)

You can cut the house or recognisable parts in the photos. I don't care about that and I don't need your exact location. Soil, exposition (sun?, deep shadow?) and climate is much more important.

Of course if your neighbours or administration throw weed killers to the soil or water systematically, nothing will grow, no matter what you try. Nothing except the more badass plants, but then you would have bigger problems than brown thumbs.

I fully agree that a garden overtaken by brambles isn't a nice thing. But it's also not true that scrubland in general is some kind of death to nature. Plants like blackberries provide protection from predation and browsing heribovores. That means they're good habitats for many species of bird, and also that they're nature's nurseries for woodland, as young trees are protected from passing deer and other animals that would otherwise eat them.

Maybe you can rent a sod remover machine? I've seen those rented out for ~40 USD per day.

https://www.youtube.com/watch?v=B8Qd33NhflQ

With those machines it's more comfortable then the spade method [0], especially if the area is larger. After the sod is removed (you can put it on the compost with the bottom up to regain good soil for future uses) pour sand onto the area and mix it in. This will remove nutrients from the soil which is what many wildflowers like.

Then throw out your wildflower seeds which you need to press on afterwards (there are tools, but as a cheap method you can just walk over them), so that the wind doesn't blow them away. In the end water them (also for the next 2-4 weeks).

[0] https://www.youtube.com/watch?v=VQuffl5Engo

Start with pots of perennials instead.

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