These are national organizations; you can usually navigate to a local or regional site from the home page.

. American Bonsai Society

http://www.absbonsai.org/

. American Horticulture Society

http://ahs.org/

. American Iris Society

http://www.irises.org/

. American Rose Society

http://ars.org/

. American Association of Botanica1 Gardens and Arboreta

http://www.aabga.org/

. California Rare Fruit Growers

http://www.crfg.org/

. Herb Society of America

http://www.herbsociety.org /

. International Bulb Society

http://www.bulbsociety.com/

. National Chrysanthemum Society

http://www.mums.org/

. Southern California Clematis Society

http://www.clematis.org/

Horticulture Resources: Contain lots of information and links to other gardening treasures.

. Address list of 1,900 companies arranged by plant type

http://qnet.com/~johnsonj/

. Glasshouse Works specializing in rare and exotic plants

http://www.rareplants.com/

. List of Garden Catalogs and links to informational sites

http://pbmfaq.dvo!.com/list/

. Ohio State University Fact Sheet Database

http://plantfacts.osu.edu/

. Select Tree

http://www.calpoly.edu/

. UC Division of Agriculture and Natural Resources

http://danr.ucop.edu/

. UC Integrated Pest Management

http://ipm.ucdavis.edu/

. UC Vegetable Information and Research Center

http://www.vric.ucdavis.edu/

. Links to many gardening related subjects:

http://www.gardening.com/

. Links & information on Fruits for Orange County

http://home.att.net/~oc_crfg

. UC Master Gardener TV Lecture Series

http://www.uctv.tv/library-series.asp?series=show&seriesID=California_Master_Gardener_Lecture_Series

. Master List of Commercial Food Related sites, recipes and nutrition information: http://internet.epicurean.com/latest/commercial1.html

. Food, nutrition and cooking information:

http://kitchenlink.com/

. The Garden Gate describes other web sites and links to them

http://garden-gate.prairienet.org/

. UCCE Master Gardeners of Orange County WEB Site

http://www.uccemg.com/

. UC El Dorado Master Gardeners' Web Page

http://ceeldorado.ucdavis.edu/mg/index.htm

. Arizona Master Gardener's Manual

http://ag.arizona.edu/pubs/garden/mg/index.html

. Fruits of Warm Climates

http://www.hort.purdue.edu/newcrop/morton/index.html

UCR home page for Avocados

http://www.ucavo.ucr.edu/

UCR varieties home page

http://138.23.190.72/Avovarieties/Varietylist/Varlists.html

Characteristics of Selected Avocado Varieties

http://home.att.net/~oc_crfg/Selected.htm

General Information on Avocados

http://home.att.net/~oc_crfg/

How to Grow a Banana Tree

http://home.att.net/~oc_crfg/banana-2.htm

Growing Raspberries and Blackberries

http://www.umext.maine.edu/onlinepubs/htmpubs/2066.htm

Growing Raspberries in Your Home Garden

http://eesc.orst.edu/agcomwebfile/edmat/html/ec/ec1306/ec1306.html

Growing Raspberries

http://gardening.wsu.edu/column/07-28-02.htm

Raspberries for the Home Garden

http://www.extension.umn.edu/distribution/horticulture/DG1108.html

Growing Blackberries in Your Home Garden

http://eesc.orst.edu/agcomwebfile/EdMat/html/EC/EC1303/EC1303.html

Growing small fruits ( blueberries, blackberries, strawberries, raspberries, etc.)

http://cru.cahe.wsu.edu/CEPublications/eb1640/eb1640.html

Basic

http://waynesword.palomar.edu/bio100.htm

Bulb Society

http://www.bulbsociety.com/

University of Illinois Extension on Bulbs

http://www.urbanext.uiuc.edu/bulbs/planting.html

Ohio State Master Gardener Manual

http://www.hcs.ohio-state.edu/mg/manual/herbac5.htm

Citrus Varieties for Orange County

http://home.att.net/~oc_crfg/citrus-varieties.htm

UCR Citrus

http://www.citrusvariety.ucr.edu/index2.php?content=history/index.html

UC IPM Pest Management Guidelines

http://www.ipm.ucdavis.edu/PMG/selectnewpest.citrus.html

Recommended varieties

http://home.att.net/~oc_crfg/Toots_Favorite_Citrus.htm

UC Guide to Healthy Lawns

http://www.ipm.ucdavis.edu/TOOLS/TURF/MAINTAIN/fertilize.html

Fertilizing Vegetable Garden Soils

http://ohioline.osu.edu/hyg-fact/1000/1601.html

Fertilizing Woody Ornamentals

http://aggie-horticulture.tamu.edu/extension/fertilizing/fertilizing.html

Fertilizing the Organic Garden

http://www.ext.colostate.edu/pubs/garden/07217.html

Fertilizing Vegetables

http://aggie-horticulture.tamu.edu/plantanswers/vegetables/fertveg.html

Fertilizing Houseplants

http://www.ces.ncsu.edu/depts/hort/consumer/quickref/houseplants/fertilizing.html

Fertilizing Your Garden

http://eesc.orst.edu/agcomwebfile/edmat/html/EC/EC1503/EC1503.html

Fertilizing Roses

http://www.ars.org/explore.cfm/fertilizing/

Soils

http://www.hcs.ohio-state.edu/mg/manual/soil.htm

How to Manage Pests

http://www.ipm.ucdavis.edu/PMG/selectnewpest.figs.html

Planting Figs

http://www.ces.uga.edu/pubcd/L163.htm

General Information

http://gardening.about.com/od/annuals/

Flowering Plants, Annual and Perennial

http://www.wvu.edu/~agexten/hortcult/flowers/

Growing Annual Flowers

http://ianrpubs.unl.edu/horticulture/g721.htm

Ohio State Master Gardeners' Manual

http://www.hcs.ohio-state.edu/mg/manual/herbac4.htm

Google Guide to annual Flower sites

http://directory.google.com/Top/Home/Gardens/Plants/Annuals/

Flowering Plants, Annual and Perennial

http://www.wvu.edu/~agexten/hortcult/flowers/

Ohio State University Extension Master Gardeners

http://www.hcs.ohio-state.edu/mg/manual/

Arizona Master Gardener's Manual

http://ag.arizona.edu/pubs/garden/mg/

UCCE Master Gardeners

http://homeorchard.ucdavis.edu/mgprogram.shtml

New Mexico MG manual

http://www.nmmastergardeners.org/Manual etc/PDF Manual.htm

Texas A&M horticulture

http://aggie-horticulture.tamu.edu/extension/tamuhort.html

Ohio State MG Manual

http://www.hcs.ohio-state.edu/mg/manual/fruit.htm

How to Manage Pests on Grapes

http://www.ipm.ucdavis.edu/PMG/selectnewpest.grapes.html

Internet IPM Resources on Grapes and Current

http://www.ippc.orst.edu/cicp/fruit/grape.html

UC IPM

http://www.ipm.ucdavis.edu/

Washington IPM site

http://pep.wsu.edu/hortsense/

Arizona IPM site

http://ag.arizona.edu/urbanipm/home.html

How to Manage Pests

http://www.ipm.ucdavis.edu/PMG/crops-agriculture.html

UC Guide

http://www.ipm.ucdavis.edu/TOOLS/TURF/

Fertilizing Links

http://www.oliveoilsource.com/fertilizer.htm

How to Manage Pests

http://www.ipm.ucdavis.edu/PMG/selectnewpest.home.html

Pests of Agriculture, Floriculture, and Turf

http://www.ipm.ucdavis.edu/PMG/crops-agriculture.html

Entomology and Pest Management

http://www.hcs.ohio-state.edu/mg/manual/ent.htm

Pantry Pests

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7452.html

General Information on pome fruits

http://waynesword.palomar.edu/ecoph17.htm

Pruning

http://hgic.clemson.edu/factsheets/HGIC1351.htm

General Fruit and Pathology Links

http://www.nysaes.cornell.edu/pp/extension/tfabp/links.shtml

Tree Sources

http://muextension.missouri.edu/xplor/agguides/hort/g06012.htm

Planting techniques for trees and shrubs

http://www.ces.ncsu.edu/depts/hort/hil/hil-601.html

Tree Planting

http://www.nrcs.usda.gov/feature/backyard/TreePtg.html

Identifying nutritional deficiencies in soil

http://www.primalseeds.org/nutrients.htm

Diagnosing Nutritional Deficiencies

http://hortipm.tamu.edu/ipmguide/nutrient/diagnosi.html<

Overview of Asexual Reproduction

http://aggie-horticulture.tamu.edu/propagation/propagation.html

Master Gardener Ohio State

http://aggie-horticulture.tamu.edu/propagation/propagation.html

UCCE

http://homeorchard.ucdavis.edu/general-prop.shtml

Texas A&M

http://aggie-horticulture.tamu.edu/extension/pruning/pruning.html

Federal Info

http://www.na.fs.fed.us/spfo/pubs/howtos/ht_prune/prun001.htm

Univ. Of Florida

http://hort.ifas.ufl.edu/woody/pruning/

Univ. Of Missouri

http://muextension.missouri.edu/explore/agguides/hort/g06870.htm

North Carolina State Univ.

http://www.ces.ncsu.edu/depts/hort/hil/ag29.html

General Information

http://www.hortnet.co.nz/publications/science/pers13.htm

Fertilizing Roses

http://www.ars.org/explore.cfm/fertilizing/

Pruning Roses

http://ohioline.osu.edu/hyg-fact/1000/1205.html

Herbs and Spices

http://oregonstate.edu/Dept/NWREC/herbs.html

General Information

http://www-ang.kfunigraz.ac.at/~katzer/engl/generic_frame.html?Murr_koe.html

Stone Fruit Varieties for Milder Climates

http://www.crfg.org/tidbits/StoneFruit.html

General Information

http://waynesword.palomar.edu/ecoph17.htm

Ohio State MG

http://www.hcs.ohio-state.edu/mg/manual/fruit3.htm

UC tomato pests

http://www.ipm.ucdavis.edu/PMG/selectnewpest.tomatoes.html

Links to Tomato Diseases

http://www.kdcomm.net/~tomato/Tomato/d_out1.html

Insects

http://www.kdcomm.net/~tomato/Tomato/Insect/insect.html

Insects or Problems

http://www.kdcomm.net/~tomato/Tomato/tomlink/problems.htm

Pruning tomatoes

http://muextension.missouri.edu/xplor/agguides/hort/g06460.htm

CRFG Fruit Facts

http://www.crfg.org/pubs/frtfacts.html

UC Information

http://ucce.ucdavis.edu/counties/ceventura/newsletterfiles/Topics_in_Subtropics3232.pdf

Master Gardeners of Ohio State on Vegetables

http://www.hcs.ohio-state.edu/mg/manual/veg.htm

UC Articles on Vegetables

http://groups.ucanr.org/mgnapa/Articles/VEGETABLES.htm

Common Vegetable Insect Pests

http://www.isis.vt.edu/~fanjun/text/Link_pest14b.html

UC Vegetable Gardening

http://vric.ucdavis.edu/selectnewtopic.garden.htm

Watering, Weeds, Pests, & Diseases

http://commserv.ucdavis.edu/CESanDiego/Schlgrdn/water.html

The Easy Guide To Lawn Watering

http://www.sbvmwd.com/water conservation/lawn_watering.htm