Chusan fan palm / Trachycarpus fortunei - problems!

I bought some seedlings (approx. 20cm with 1-4 leaves) but now the leaves are starting to shrink and fold into a thin spine (collapsing?)!! Have anyone tried this before? They are growing in small turf pots so I was thinking that maybe they get too much fertilizerfrom the pot? Or did i give them too little water?
I have some other tr. fortunei, tr. latisectus and chamaerops humilis growing in plastic pots and they all seem fine! The pots are somewhat larger though, so they don't dry out as fast...
The seedlings I'm having trouble with come from another supplier than my other seedlings and seeds.
Should I hurry and plant them into plastic pots, or wait and see?
Brian
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It sounds as if you are keeping them far too dry, which is causing the leaves to contract concertina fashion. All Trachycarpus species prefer moist well-drained, but moist, cool conditions and seedlings especially resent being too dry at the root. The roots are quite delicate early on and without sufficient moisture they can shrivel resulting in the death of the seedling. The ideal medium is a basic multi-purpose compost mixed with about 10% by volume of added perlite to provide extra porosity.
Seedlings are best transferred to small plastic pots at the 1st. leaf stage and moved on as necessary using a similar compost. By the time the seedlings have reached the 4th. leaf stage, they should be ready for 0.5L pots, this time adding a loam based compost to the mix : 2parts multi-purpose, 1 part J.I. No2. Again adding 10% by volume of perlite will ensure a well aerated mix that retains moisture and yet is free-draining. Once established in pots, young Trachycarpus do not need artificial heat, merely frost protection. However, a minimum winter temperature of 5C will help them grow somewhat faster.
The first palmate (fan) leaf usually appears at the 5th. leaf stage when the seedling is 18 - 24 months old. Development is slow for the first few years, but speeds up rapidly once the leaf fans approach 45cms. diameter. When the young plants have 4 or 5 true leaf fans, they are best planted out in their final positions - ideally dappled shade or part sun in wind-sheltered sites. If the soil is moist and humus rich, you can expect up to 30cms. of trunk growth per year on established plants.
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