Grand marnier is part of the Hibiscus genus and is a Tropical hibiscus variety. Its scientific name is Hibiscus rosa-sinensis 'Grand marnier'. Grand marnier is a hybrid variety. Blooms appear in these approximate colours: Chrome yellow and Ghost white and Boston University Red. The mature flowers take a Single form, with an approximate petal count of 5. This variety is an Flower that typically grows as an Evergreen, which is defined as a plant that retains leaves throughout the year. Grand marnier normally grows with a shrub-like habit to a mature height of 1.82 metres (that's 5.92 feet imperial).
Grand marnier Tropical hibiscus needs a moderate amount of maintenance, so some level of previous experience comes in handy when growing this plant. Ensure that you are aware of the soil, sun, ph and water requirements for this plant and keep an eye out for pests.
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Tropical hibiscus are highly sensitive to phosphorus (the middle “P” number on fertilizers) and an excessive amount will kill the plant. Do not use so-called “bloom fertilizers” on them. Instead tropical hibiscus need a lot of potash to bloom properly (the last number or “K” on fertilizers). Palm fertilizers are widely available and usually have the proper ratio of a medium-low-high NPK ratio along with needed minors.
The pesticide malathion will defoliate tropical hibiscus. Do not use it for pest control.Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Grand marnier is thought of as tender, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside. The USDA Hardiness Zones typically associated with Grand marnier are Zone 9 and Zone 12.