Honey Locust, Thorny Locust (gleditsia triacanthos)
5 grams (approx 23 seeds) £1.10
10 grams (approx 46 seeds) £1.45
25 grams (approx 115 seeds) £1.85
50 grams (approx 230 seeds) £2.95
100 grams (approx 460 seeds) £5.00
250 grams (approx 1150 seeds) £12.00
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Germination, Sowing and After Care Information for
Honey Locust (gleditsia triacanthos)
The first (and easiest) method is place the seeds in a heat proof container and pour hot (not boiling!) water 70-80 degrees Celsius over them and leave them to soak for between 12-24 hours. Seeds that have been successfully pretreated will have swollen to around 2-3 times their previous size. Remove all swollen seeds as these will be damaged by further pretreatments. These can be sown immediately. This hot water treatment can be repeated up to 3 times, making the water a little hotter each time. Seeds that remain small need to be dried for further treatment.
The remaining method is to physically breakthrough the seed coat by cutting or (k)nicking the edge of the seed with a knife or using a file or even rubbing them between layers of fine sandpaper. All of these methods can be used to break through the seed coat. Once you have done this soak the seeds in cold water for 12-24 hours and successfully treated seeds will have imbibed water and swollen greatly. Any that have not could be scarified again followed by another water soak. Sow all the seeds, even those that remain small as they may germinate much later (perhaps years later), the seeds are very long lived and can remain viable in the field for many years.
Sow in pots or seed trays of good quality compost at a depth of about 1 cm (just less than ½ inch) The seed usually germinates in under 4 weeks at 15-20°c. It is important that temperatures or not greatly higher than this or germination will be reduced.
Growth in the first growing season is usually between 20 and 40cm and accelerates in the second and subsequent years. Plant them out into their permanent positions after 2 or 3 growing seasons. This species usually transplants very easily. Honey Locust tolerates (and often thrive best in) poor and compacted soils and in difficult growing conditions. In cultivation they need little care.