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The LSU AgCenter’s mission of research, extension and teaching is why we provide these resources to the community and beyond. We will continue to offer free high quality courses that help participants apply the knowledge they gain in their own gardening endeavors. We want nothing to impede anyone from becoming better and more successful gardeners. Please consider a donation to support these online courses and the LSU AgCenter outreach programs.

Thank you to those who have already donated gifts to support our efforts and we appreciate any gift to help us further our efforts. Once again, we hope you enjoy the Home Citrus Course and find it valuable. We look forward to seeing you again in upcoming courses.

Thank you!



Access the pretest here. This pretest is required and used by program coordinators to gauge learning outcomes. Your grades will not impact your certification. Use the pre and post-test grades to judge your improvement and learning retention.

LSU AgCenter Backyard Citrus Discussion Group

This is the discussion group for general questions, fun posts, and sharing about our citrus trees as a part of the LSU AgCenter Backyard Citrus Certificate Course.

You can find our Facebook discussion group here.

Citrus - Module 1.1 - Types and Characteristics

Citrus - Module 1.2 - Kumquats & Calamondins

Citrus Module 1.3 Satsumas

Citrus - Module 1.4 Mandarin, Tangerine, Tangelo

Citrus - Module 1.5 - Sweet Orange

Citrus - Module 1.6 - Pommelo & Grapefruit

Citrus - Module 1.7 - Lemon & Lime

Citrus - Module 1.8 - Rootstock & Dwarf Citrus

Citrus - Module 2.0 - Planting Your Citrus Tree

Citrus - 2.1 Growing Citrus in Containers

Citrus - Module 3.1 - Fertilizing & Watering

Citrus - Module 3.2 - Pruning

Espalier Training Citrus Trees

Citrus - Module 3.3 Weed Control & Mulching

Citrus - Module 4.1 - Asian Citrus Psyllid & Root Weevil

Citrus - Module 4.2 Pests - Leaf Miners & Orange Dog Caterpillar

Citrus - Module 4.3 - Pests - Leaf Footed Bug & Green Stinkbug

Citrus - Module 4.4 - Pests - Aphids, Whiteflies, Mealybugs & Scale

Citrus - Module 4.5 - Pests - Mites & IPM

Citrus - Module 5.1 - Citrus Canker

Citrus - Module 5.2 - Citrus Greening HLB1

Citrus - Module 5.3 - Citrus Scab and Sweet Orange Scab

Citrus - Module 5.4 - Other Diseases Part 1

Citrus - Module 5.5 - Other Diseases Part 2

Post Citrus - Module 6.1 - Other Disorders - Bird, Thorn and Rodent Damage

Citrus - Module 6.2 - Puffy Fruit, Dry Fruit and Split Fruit

Citrus - Module 6.3 - Nutrient Deficiencies

Citrus - Module 6.4 - Freeze Protection & Damage

Posttest, evaluation and certificate

The posttest grades to judge your improvement and learning retention.

Click here toaccess the posttest and evaluation.

Backyard Citrus Certificate pdf

Additional Resources


Innovate . Educate . Improve Lives

The LSU AgCenter and the LSU College of Agriculture