Lavandula latifolia grow and care shrub of the genus Lavandula also known as Spike lavender or Portuguese lavender, Lavandula latifolia perennial evergreen plant, leaves edible but mostly used as ornamental plant for the fragrant flowers and leaves, can grow in mediterranean, subtropical or temperate climate and growing in hardiness zone 5-10a with the right care possible in hardiness zone 10b.
Leaves fragrant in the color green in oval shape with serrated edges in size of 3-5 cm.
How to care: Fertilize once a year in the spring, add organic material and humus, in cold winter better to put mulch
What is the best way to start growing? Plant / Seed / Vegetative Reproduction – cutting possible by bending a branch over and covering it with soil, or by cutting, the cutting possible to put in water and switch the water every few days or put the stem in soil better peat soil and better to use root growth hormone, in both cutting methods better to do it spring season, keep high humidity and spray the plant with water.
Is it necessary to graft or use vegetative reproduction? No, but possible and it’s not hard to from seeds but easier start by cutting or just plant
Difficulties or problems when growing: Aggressive, allelopathy
Planting season: Spring to summer in hardiness zone 5-8, spring to autumn in hardiness zone 9-10a, autumn to spring in hardiness zone 10b.
How to plant: Planting in bigger hole than the root ball 50-100%, put in the hole dead leaves and organic matter
Pests and diseases: Aphids
Pruning season: All year (but better after the blooming season)
How to prune: More for design, dead leaves and flowers, when harvesting the leaves better to prune the flowers stem
Size of the plant: 30-80cm, 12-32 inches
Growth speed in optimal condition: Fast growing / Medium growing
Water requirement: Average amount of water
Light conditions in optimal condition for growing: Full Sun / Half Shade (less flowers) better in hardiness zone 10b
Is it possible to grow indoor as houseplant? No
Growing is also possible in a planter /flowerpot / containers: Yes, when grow in container, size 8-18 liter (2-5 gallon) average amount of water that needed, it’s to keep the soil moist consider to put mulch and can reduce vaporization of the water, every two years to switch soil in the pot don’t let the soil be rotten possible to switch just part of the soil, soil need to be well ventilated with good drainage, rich with organic matter, can us in potting mix or peat soil with perlite or vermiculite, when the roots fill all the pot better to switch to bigger pot or possible to cut part of the roots and the plant.
Bloom season: Spring / Summer
General information about the flower Purple-lilac the flowers grow in the end of specific stem in spike structure that look like hive
Pollination is done by: Bees, attract pollinators
How to grow from seeds
Sowing requirement: Full sun, well-drained soil
Saving seeds and care until sowing: Cool and dry location
Sowing season: Spring to summer
Planting spacing: 30*40cm, (12*16 inches)
Depth of Sowing: 1cm (0.5 inch)
Conditions for seeds germinate: Moist soil, 10-21C (50-70F)
Watering requires for Seeds: Average amount of water
Germination time: 2-5 weeks
Condition of seedling: Full sun, keep the soil moist
Do the seeds require burying? Yes
Chilling hour’s requirements: 3-8 weeks
Alternative names: Broadleaved lavender, Spike lavender, Portuguese lavender