
1) Bulb cover 2) Cultivated dirt 3) Dirt 4) Dirt that surpasses fuel 5) Fertile ground layer 6) Fertile layer 7) Nursery purchase 8) Soil 9) Soil improver 10) Surface layer of earth 11) Surface soil 12) Type of soil 13) Upper layer of fertile earth
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https://www.crosswordclues.com/clue/topsoil

1) Dirt 2) Earth 3) Loam
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https://www.crosswordclues.com/clue/topsoil

mostly fertile surface soil moved or introduced to topdress gardens, roadbanks, lawns etc.
Found on
http://en.wikipedia.org/wiki/Glossary_of_environmental_science

• (n.) The upper layer of soil; surface soil.
Found on
http://thinkexist.com/dictionary/meaning/topsoil/

The uppermost and the darkest layer of the soil that contains most of the organic matter, living organisms and plant roots.
Found on
http://urbanext.illinois.edu/veggies/glossary.cfm

This is the top layer of soil. It is usually the most fertile, being dark in colour and crumbly.If you dig into undisturbed garden soil, you'll find it has a clear structure. The upper layer or topsoil, which can vary widely in depth, is normally dark, a sign that it is rich and full of plant foods. Garden plants grow best in topsoil that is well b...
Found on
http://www.bbc.co.uk/gardening/htbg/glossary/topsoil.shtml

uppermost layer of soil, usually darker and richer than the subsoil.
Found on
http://www.encyclo.co.uk/local/20003

Soil that is on the very top, hopefully containing a lot of humus and good elements needed for growth.
Found on
http://www.encyclo.co.uk/local/20077

The upper part of the soil profile that is relatively rich in humus, which is technically known as the A-horizon of the soil profile. ... (09 Oct 1997) ...
Found on
http://www.encyclo.co.uk/local/20973

The surface portion of the soil, usually the average plough depth, which may also include the sub-surface soil that contains organic matter.
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http://www.encyclo.co.uk/visitor-contributions.php
Top'soil` noun The upper layer of soil; surface soil.
Found on
http://www.encyclo.co.uk/webster/T/71

The top layer of native soil. This term may also apply to good quality soil sold at nurseries and garden centers.
Found on
http://www.thegardenhelper.com/dictionary.html

[
n] - the layer of soil on the surface
Found on
http://www.webdictionary.co.uk/definition.php?query=topsoil

Uppermost layer of soil, usually darker and richer than the subsoil and with a higher content of nutrients and organic matter.
Found on
https://extension.umd.edu/hgic/resource-library/vegetable-gardening-glossar

top 6 inches (approx.) of soil - contains the most nutrients
Found on
https://sciencetrek.org/sciencetrek/topics/soil/glossary.cfm
surface soil noun the layer of soil on the surface
Found on
https://www.encyclo.co.uk/local/20974

Upper, cultivated layer of soil, which may vary in depth from 8 to 45 cm/3 to 18 in. It contains organic matter – the decayed remains of vegetation, which plants need for active growth – along with a variety of soil organisms, including earthworms
Found on
https://www.encyclo.co.uk/local/21221

The top layer of quality soil. Also applies to good quality soil sold at garden centres
Found on
https://www.encyclo.co.uk/local/21504

The uppermost layer of soil that's the site for a plant's root growth and contains the most organic matter.
Found on
https://www.encyclo.co.uk/local/22486

The top layer of native soil. This term may also apply to good quality soil sold at nurseries and garden centers.
Found on
https://www.encyclo.co.uk/local/22488

The fertile, upper part of the soil.
Found on
https://www.encyclo.co.uk/local/23353

The fertile, upper part of the soil.
Found on
https://www.encyclo.co.uk/local/23362

The uppermost layer of soil that's the site for a plant's root growth and contains the most organic matter.
Found on
https://www.lowes.com/projects/lawn-and-garden/garden-glossary/project

the upper layer of soil that you plant in. It varies in depth from place to place, but will almost always be less than a foot deep and can be as little as 2 inches deep
Found on
https://www.provenwinners.com/learn/dictionary-gardening-terms
No exact match found.