Landscaping Rules in Calvert County, MD (2026)
2 rules for unincorporated Calvert County, Maryland.
Verified from official government sources
Weed Ordinances
On a developed lot in Calvert County outside Chesapeake Beach and North Beach, grass, weeds, underbrush or noxious plants cannot grow past 12 inches within 100 feet of any house, mobile home or other residence, occupied or not, under the county's property maintenance code.
Calvert County Grass and Weed Height Limit
Some RestrictionsCalvert County Code § 92-1
In addition to the above, it shall be unlawful for the owner of any developed lot, tract or parcel located in any of the zoning districts referenced in this section to permit any excessive growth of grass, weeds or underbrush, or any growth of noxious plants within 100 feet of any house, mobile home or other residence, whether occupied or unoccupied. For the purpose of this chapter, "excessive ...
Rainwater Harvesting
Calvert County Code § 123-11 lists rainwater harvesting among the Environmental Site Design treatment practices a developer may use to meet the county's stormwater standards. It is one option alongside rain gardens and bioretention, not a standalone residential permit program, and once used to satisfy a plan it must be recorded and cannot be altered without Department approval.
Calvert County Rainwater Harvesting Rule
Few RestrictionsCalvert County Code § 123-11
The following ESD treatment practices shall be designed according to the Design Manual to satisfy the applicable minimum control requirements established in § 123-10 of this chapter: ... (d) Rainwater harvesting; ... ESD planning techniques and treatment practices ... and structural stormwater management measures used to satisfy the minimum requirements in § 123-10 of this chapter must be recor...
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