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Wednesday, December 12, 2007

Self seeders are good for garden but not the environment

You hear a lot of bloggers rave on about how great it is for certain species of plants to self seed around the garden, and yes it's true that it is a good thing confined within your own garden space.

As it provides you with free replacement plants each season, from these species.

Among the species that do this includes plants like petunias, alyssium, Queen Anne's Lace, and even some veggies and herbs like basil and lettuce.

However on the downside have you ever thought about what happens to the seed that falls on to your driveways, paths or even onto the roads in front of your property..... They end up being washed into the stormwater systems, that flow out into your local creeks and river systems. From here they wash into the semi dry gullies or up onto the banks of the water systems, where they sprout and become weed species in your local environments.

Another issue again is the plants which epand their territory by runners or underground runners, or by offshoots. These are good when confined within your garden but what happens when these plants are pruined or have side shoots dug up and removed from your property. Especially when the garden waste they are in is dumped inappropriately and not composted properly. They again have a major chance of becoming environmental pests. Plants which stand a chance of becoming so include many of the aloes, frangipani's, mints, bamboos etc etc.

So what can you do to stop these plants or seeds escaping from your property.
1. Ensure that all organic waste is properly composted
2. When you wash driveways and paths around seeding time, sweep or wash them into lawn or garden areas, not the storm water drains.

Seed Newsvine

9 comments:

Patrick - Bifurcated Carrots said...

Since Holland is covered with grass, and there is enough water in the ground to keep it green and strong growing almost year round, there are a limited number of plants that can really escape the garden. This is because most plants can't really survive in a grassy field.

This is probably why there are almost no restrictions on importing plants here.

The two main exceptions of this are parsnips and salsify, both of which can be found growing wild and must have escaped from gardens years ago.

Do you have a lot of wild vegetables growing around you?

Diane said...

I hadn't thought of the possible harm in allowing seeds to self-seed in our garden. But birds drop seeds all over in their droppings. Though, I suppose the less we allow to self-seed likely the better. Food for thought.

Diane

Bare Bones Gardener said...

Hi Pat, here we have things like the tomatoes, peppers(chillies), melons and pumpkins among the more prolific vegetable pests in the local environment.

Yes Diane we don't always think through to the end result, what we see before us. We often stop at what we see as a result (self seeding in the garden), and stop there, without taking it further. And yes birds and animals taking seeds off the property is another way of seed leaving the property and spreading into the environment.

Anonymous said...

Hi, as gardener for more than 30 years, I do agree in one aspect of your argument and that is some species should be more controlled. But as for the ones you've all mentioned as "possible"pests for the environment, I have to disagree, I have not once in my 30 years seen a chilli or a tomato or pumkins growing wildly, melon I have but only once, but it dies before it fruits most of the time simply coz our continent dont have much rain fall..so i can harldy call it a threat, but its like with Sturt desert pea, its native in SA & WA but a weed in Vic... And as for the birds doing there bit, I can honestly say thank you to them, Coz of them I have a plant Ive wanted for ages... so benefits all round, and considering the environment needs all the help it can get, perhaps mass planting natives with a general cleanup bi annually would help.. especially in our arid areas... cheers guys

Weepnwillo2 said...

I guess it is all perspective. Here in Michigan, it is the massive expanse of lawns that seem to be the encroachers. It is "Kentucky" blue grass for a reason, yet here it abounds. And while the occasional basil plant or lettuce might find it's way into the local ditch, who is to say the ditch isn't the better for it. Even the pervasive spreaders like those in the mint family, or carrots for example, are limited by growing conditions from year to year, location, tempurature, etc. I can understand your perspective for people who are in a more unique environment with species that are in danger of being overrun litterally by the garden variety. However in the area that I am in a stray pumpkin or two is expected, and usually welcomed or cut down. Remember the only deffinition of a weed is a plant that is growing where you do not want it to, and that by deffinition alone a rose may be a weed in the right garden.

Weepnwillo2 said...

Just as an aside....Isn't it the natural process for some plants to migrate and find new areas that are perhaps more favorable for growth. Natural selection and all that? Just a thought.....

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