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Geothermal Heating for a Citrus Greenhouse: Cost vs. Benefit

Geothermal heating for a hobby greenhouse is theoretically possible but rarely cost-effective. It requires thousands in piping, pumps, heat exchangers, and fans, plus a super-insulated structure. A propane heater for a few hundred dollars is far more practical for winter citrus protection.

About Gardening: Citrus Fruit Damage in Texas: Sweet Orange Scab Confirmed; Alternative Citrus Scab Treatment: Organic Product Testimonial; Citrus Leafminer Causing Cupped Leaves: Organic Solution; Citrus Greasy Spot on Grapefruit: Copper Fungicide Timing; Greenhouse Heating Efficiency: Insulation, Thermal Mass, and Programmable Control; Controlling Citrus Leafminers with Spinosad; Citrus Tree Pruning: Essential Steps for Better Fruit and Health; Citrus in McDonough: 'Thomasville' Citrangequat Survives Cold Winters; Winter Care for Citrus Trees in Georgia; Citrus Trees Outdoors in Winter: They'll Freeze, Try Hardy Varieties

Garden Articles

Recovering Citrus from Fertilizer Burn: Slow-Release and Foliar Alternatives

Citrus Leaf Curl in March: Likely Leafminer, Not Disease—Organic Management Tips

Saving Potted Citrus from Stem Rot and Leaf Drop

Citrus Wound Treatment: Copper Sulfate Risks and Proper Bordeaux Mix

Citrus Fruit Drop in Mature Trees: Spray Schedule, Not Just Fertilizer

Why Landscape Fabric and Limestone Are Poor Choices for Citrus Trees

Reviving Potted Citrus Trees: Rootstock Suckers and Care

Plants

Sour Rootstock Sprouts on Citrus: What to Keep, What to Remove

Citrus Leafminer Management: Biology, Cultural Control, and Limited Chemical Options

Transplanting a Citrus Tree in Phoenix

Citrus Tree Leaf Drop After Moving Indoors

Winter Care for Container Citrus Trees Indoors

Citrus Aphids and Ants: Organic Control in Southern Spain

Kaffir Lime Tree Diseases