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preparing lawn for wildflower seeds

preparing lawn for wildflower seeds Overseeding Mix – Add Wildflowers to Existing Grass Areas — Northwest Meadowscapes

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preparing lawn for wildflower seeds Overseeding Mix – Add Wildflowers to Existing Grass Areas — Northwest MeadowscapesA response to overgrown grass or neglected areas that could use some native wildflowers A system for increasing pollinator and wildlife value in existing grasslands. Lots of folks contact us wondering what to do with overgrown grassy areas that lack native plants. Often this includes areas that are too big, too difficult, or not economically feasible to completely clear of existing vegetation and start from scratch. After several years of testing at

A response to overgrown grass or neglected areas that could use some native wildflowers...A system for increasing pollinator and wildlife value in existing grasslands.

Lots of folks contact us wondering what to do with overgrown grassy areas that lack native plants. Often this includes areas that are too big, too difficult, or not economically feasible to completely clear of existing vegetation and start from scratch.

After several years of testing at multiple sites across the Northwest, we formulated a mix of just wildflowers – specifically the wildflowers we’ve successfully overseeded into existing grass and thatch.

This is a low-cost and low-input option for adding more biological richness to areas such as:

  • Old fields
  • Roadside ditches and embankments
  • Vacant lots
  • Post-industrial sites
  • Marginal areas previously disturbed by encampments, logging, or construction
  • Retired hayfields and pastures (note: this isn’t a mix for livestock)
  • Abandoned or overgrown lawns

For best success, and for accurate expectations, please note the following:

1. This is a mix for full sun, or a mix of full sun and partial/dappled shade.

2. No inert material needs to be added before sowing. These are relatively dense, heavy seeds that can work their way down through some thatch to reach and settle upon the soil surface.

3. Progress with overseeding wildflowers into grassy areas can be slow. We recommend repeating the process annually, or at least every few years, if possible. This, combined with optimal installation and management (see below) can slowly change the plant community, adding color, diversity, and biological richness.

4. Overseeding into diverse grass populations (e.g. mixtures of timothy, orchard grass, lawn fescues, sweet vernal grass, etc.) will typically result in more success than overseeding solid monocultures of invasive grasses (e.g. reed canary grass or rat tail fescue).

Installation and Management: Seed should be hand-scattered or mechanically broadcast over the existing grass sward in late summer through early winter.

Initial Site Preparation may consist of the following approaches:

1. OKAY: Seed can be simply scattered into existing grass in late summer. This approach will work best with repeated annual overseeding

2. BETTER: Mow the site with a thatching lawn mower blade in mid-summer to finely chop-up the clippings. Repeated mowing at the lowest possible height is ideal to both break down the clippings and thatch as much as possible, and to open up more bare ground between the existing grass. Then, in late-summer, the site can be overseeded.

3. BEST: Mow the site as low as possible in early fall with a bagging mower, or cut the field for hay, and remove the bagged clippings or hay bales to compost them away from the meadow. Then, overseed the area before significant grass re-growth occurs.

Following the initial first-year seeding, you should perform active ongoing-management of the meadow for best performance:

1. OKAY: Actively watch for and remove aggressive weed invaders such as Canada thistle and blackberry. Continue to overseed the meadow in late summer every year if possible, or at least every few years. Consider adding yellow rattle at a rate of 1-2 packets per 100-sqft to further reduce grass vigor and increase wildflowers.

2. BETTER: Actively watch for and remove aggressive weed invaders such as Canada thistle and blackberry. Mow the site with a thatching lawn mower blade in early fall to finely chop-up the clippings. Repeated mowing at the lowest possible height is ideal to both break down the clippings and thatch as much as possible, and to open up more bare ground between the existing grass. Continue to overseed the meadow immediately after mowing every year if possible, or at least every few years. Consider adding yellow rattle at a rate of 1-2 packets per 100-sqft to further reduce grass vigor and increase wildflowers.

3. BEST: Actively watch for and remove aggressive weed invaders such as Canada thistle and blackberry. Mow the site as low as possible in early fall with a bagging mower, or cut the field for hay, and remove the bagged clippings or hay bales to compost them away from the meadow (composting will allow any viable insect eggs or larva to emerge). Continue to overseed the meadow immediately after mowing every year if possible, or at least every few years. Consider adding yellow rattle at a rate of 1-2 packets per 100-sqft to further reduce grass vigor and increase wildflowers.

A Note on Expectations: Neglected and overgrown grassy areas may have decades of dormant viable grass and weed seed in the soil (hundreds of pounds per acre). Reintroducing native wildflowers into such spaces is a process, not a magic switch. The more active weeding, annual mowing, and overseeding invested in such sites, the more success you will have. Although results can take several years to become increasingly visible – with active weeding, annual mowing, and late season overseeding – most grasslands can be improved.

Seed Mix Contents:

Annual Wildflowers: Farewell to Spring (Clarkia amoena), Spanish Clover (Acmispon americanus), Foothill Clover (Trifolium ciliolatum), White Meadowfoam (Limnanthes alba)

Perennial Wildflowers: Western Yarrow (Achillea millefolium), Great Camas (Camassia leichtlinii), Common Camas (Camassia quamash), Blue Eyed Grass (Sisyrinchium idahoensis), Big Leaf Lupine (Lupinus polyphyllus), Riverbank Lupine (Lupinus rivularis), Selfheal (Prunella vulgaris), American Vetch (Vicia americana), Oregon Sunshine (Eriophyllum lanatum)

Quantity: 1 lb. (enough for 1000 square feet, formulated at 80-seeds per square foot).

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SKU: 39136936209

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Marilyn solano
Waukegan, US
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Interesting
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Product with very good quality, its description matches the website.
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Reviewed in the United States on April 11, 2026
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Daniel Rosehill
West Palm Beach, US
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A wonderful primer for those discovering the amazing world of generative AI
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Somewhere in the past year, ChatGPT has gone from "cool, interesting, amusing" to a massively valuable work assistant capable of writing Python scripts, analysing data, and doing lots, lots, more. The key to this? The rapid evolution of OpenAI's GPT models and making my first forays into prompt engineering. If I thought I was getting good, though, this book took me reminded me that I'm just scratching the surface. Halfway through the first chapter I was already furiously scribbling notes in the margins for what I could do better with my prompt writing and by the end of the text I felt like I had gotten a very good grounding - not just in GPTs specifically but in the bigger picture of how these hugely powerful tools were trained and came to maturity. I imagine that few will argue with my assertion that there is lots of hyperbole and "noise" in the AI space right now which, as ever, makes it hard to pick out the signal from the noise. Which is precisely why I sought out an O'Reilly title and I'm very glad that I did. Thorough, excellent, and I hope that this edition will be the first of many. As this rapidly maturing field scales and matures I think that prompt engineering will be an essential discipline to master. Pick up this text to get a good foothold on things.
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Reviewed in the United States on August 3, 2024
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Scott J. Pearson
Bozeman, US
★★★★★ 4
Understanding AI prompts as a science
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Prompt engineering is the art and science of finding the right words to generate the right responses from artificial intelligence (AI). It's becoming a skill in-demand in today's workplaces. It's also becoming an essential skill for life. To understand prompt engineering, you must understand how AI tools understand their inputs. This book explains that to you in many forms. It covers prompting as it intersects all the major AI disciplines, like general prompts (as in a ChatBot), fine-tuning, and retrieval-augmented generation (RAG). It also introduces how prompting intersects a couple of image-generation tools. As a scientist, I appreciate the theoretical approach to these practical matters. Too many people are hacks at AI these days, and any technical understanding can rapidly advance an individual's effectiveness. Prompt engineering is often made fun of as a "soft" topic, but as this book demonstrates, it intersects all the major AI areas. Presumably less garbage in means less garbage out. This book shows how you can make that take place. As typical for O'Reilly materials, this book appeals to people who desire an intermediate-to-advanced understanding of how AI works. It's not for the casual user. Anyone technical involved in professional knowledge generation using AI can benefit from understanding the dynamics "under the hood." It's a good, though perhaps not ground-breaking, textbook for those of us unable to take a class in the subject. Prompt engineering may be a soft topic to many, but books like this ground the field in the science that can make or break a digital or software product.
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Reviewed in the United States on December 13, 2025
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Jason Bolton
Fort Morgan, US
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Great book
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Great book! It is helpful as I work towards my Masters of Science in Applied Artificial Intelligence
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James Gianoglio
Port Orchard, US
★★★★★ 5
Comprehensive Guide with Practical Insights
Format: Paperback
This is a solid book for understanding the art and science of working with LLMs and other generative AI models. I always struggled with getting the output I was looking for, and wasn't sure how best to "ask" the models for what I wanted. This book did a great job of laying out the strategies and practical guidance to craft the prompts. There were a lot of tips and tricks, but the overall understanding and framework around prompt engineering has been super useful.
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Reviewed in the United States on June 25, 2024

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